Chapter Text
She was never going to drink again.
That’s what Kokomi said to herself as she felt her head pounding inside her skull. Although she was used to the same phone alarm for four years by then, it suddenly became extremely annoying. It was also her reminder that summer break had ended and getting blackout drunk last night probably wasn’t the best decision. But it wasn't technically her fault, since stupid Lumine lured her into drowning her frustrations with the incredible power of alcohol.
After struggling to open her eyes, she finally glanced at her roommate’s side of the dorm and spotted nothing more than Lumine sleeping beside her, without any clothing. On one hand, she wasn’t going to let Ayaka breathe now after knowing that she had slept with the greatest archetype of frat jock she hated so proudly. On the other hand, she was disgusted that they fucked while she was passed out just right next to them.
She grunted after her head throbbed again, barely getting out of bed before an urge to throw up appeared. The pink-haired girl ran to the bathroom without worrying about whether she was being loud or not. She threw out the majority of the alcohol in her body and glanced at the mirror, noticing how the make up and the clothes from last night were still on. Taking them off, Kokomi forced herself to get under the cold water from the shower and jumped a little to distract her body from the low temperature. Her swim training wasn’t useless, after all.
Seconds after finishing her shower, she heard a commotion coming from inside the room. Grabbing a towel, she peaked her head outside the bathroom door and had to hold a laugh after seeing what was going on.
“You took advantage of me, you jerk!” Ayaka said with rage in her voice while slapping a very much naked Lumine. The Kamisato girl wasn’t very different either, only covering herself with the bed blanket.
“What? You’re the one who asked me to have sex with you! You would've taken my clothes off in the middle of the party if I hadn't suggested coming back to the dorms!” The blonde girl picked her underwear off the ground while trying to stay off the range of Ayaka’s very powerful slaps.
“I was drunk! You should’ve stopped me, stupid.” It was interesting to see Ayaka's slightly disappointed expression after Lumine managed to put on her entire underwear.
“Yeah, sure, and I wasn't. Come on, I was drinking beer upside down before you started groping my ass!”
Well, Lumine wasn’t lying. Kokomi was still sober when her friend started to show signals of wanting to bone the blonde girl. She had to see everything, including the part where they almost swallowed each other making out in front of everyone. That was the little push that made the pink-haired girl grab the first alcoholic drink that she could find nearby and proceed to do this for the rest of the night. Having just broke up with her “boyfriend” the night before, seeing two people stick their tongue into each other was the last thing she needed. Kokomi was hoping to finally get laid that night, but her lack of attitude was seriously starting to get annoying.
“Lumine isn’t lying, you know…” She said from behind the door, startling the two exalted girls. “You did say how hot her ass looked in that j-”
“Hey! Whose side are you on?”
Lumine smiled smugly and finished putting on her jeans, waving to the Sangonomiya girl. "Thanks Koko, you're the only one who understands my side of the relationship."
"We're not in a relationship! God, you're so annoying."
The blonde only laughed before grabbing Ayaka by the waist and pulling her close to a very intense kiss. "Same time next week?" Lumine asked, leaving a flustered Ayaka almost out of words.
"......whatever."
The jock walked out of the dorm with her jacket and shirt in hand, making Kokomi burst out in laughter after she closed the door. "You two realize that you can have sex like normal people, right? You do this every damn week, just date already."
"I would never in a million years date that brute! She sure knows how to fuck me, but that's all. Only if she was more prim and proper like her brother, maybe…"
"I swear to god that no damn Netflix drama is better than watching you two endlessly bickering just to end up in the same bed." Kokomi passed by a still blushed Ayaka, and proceeded to start picking her clothes for today.
"So Miss Sangonomiya Kokomi is getting really bold these days, isn't she? Tell me how is your love life then. Heard anything from Gorou?"
"Please don't mention this name again, I'm still recovering from the most boring and disappointing period of my life." Ayaka laughed, and then rushed to the bathroom since her Business classes were also coming back today. Kokomi finished putting up her clothes and started packing her bag, making sure all of her books and notes were there.
The guy mentioned by Ayaka, Gorou, was Kokomi's first and only boyfriend - until they broke up 3 days ago. She came from a small and very religious town called Watatsumi, and her parents were currently responsible for the town's church, so you can only imagine how her life was. Dating Gorou wasn't exactly her choice, but after going through puberty without showing any signs of interest in boys at all, her dad started to get worried that his precious little girl was going to turn out "like that", so he quickly arranged a relationship between her and the son of the town's police chief. Nothing exhaled more masculinity than that, right?
She knew Gorou since childhood and he was a good friend, but a terrible boyfriend. Sometimes it was hard to believe they were really dating. They started the relationship when Kokomi was eighteen, and after four years, they only had sex thrice and Kokomi was drunk during all of them. She never really had an orgasm in her life, since even masturbation was a taboo. All her hormonal frustration was aggressively dumped into studying politics and human relationships. She aspired to be a good and helpful leader to people in the future, different from her borderline obsessive parents.
But now she was a very hungover and late student that needed to run, otherwise she would miss the first class of the semester. Storming out of the room after yelling a goodbye to Ayaka, she proceeded to run through the enormous campus of Inazuma City University.
Looking at it in her last year of college, moving out from Watatsumi to Inazuma City had been a huge deal four years before. She remembered how even the bare minimum would leave her totally astonished. People of her age dressing in such different and extravagant styles, the big buildings and how the city never stopped working, even late at night. It was hard in the beginning, keeping up with how fast everything went by, but eventually she found her own pace. At least, she was sure that life in Watatsumi wasn't going to be missed.
Arriving at class, she felt relieved that the teacher wasn’t there yet. Some girls were talking about how they had to change teachers last minute because the last one had gone into labor or something like that. It was a pity. Kokomi really liked the previous teacher.Going through changes in her last semester was going to make things a little more complicated, but nothing she couldn't handle.
Deciding to go through some notes before class, everyone got startled after the door opened harshly, and the sound of firm boot steps echoed around the room.
Kokomi wasn't sure if she was feeling scared or aroused. Maybe both.
It could be the remaining alcohol in her system from last night, the final papers that she had to submit for graduation, or the fact that she hasn't been properly fucked in well…..forever.
But she was unable to contain the heat that took over her body after seeing her new Autocracy and Democracy teacher entering the classroom.
"You're all going to call me Professor Raiden, no exceptions." The purple haired woman stated, firm and calm. New teachers would usually get all nervous and talk too much, trying to get sympathy from the class, but she was clearly different. Her aura demanded discipline and respect.
If Ayaka knew how much Kokomi was objectifying this woman in her head right now she would surely spend the rest of her week hearing about feminist discourse from the Kamisato girl. But she just couldn't help it.
Kokomi barely knew that woman but all she could think about at the moment was how easy it would be for her teacher to bend her over the class desk, lift her skirt up, push her panties to the side and stick three fingers into her tight little p-
Oh god, what am I thinking? This escalated kind of quickly.
Daring to look at the woman in front of the class once again, she felt her knees getting slightly weak. The professor had her back turned to the students and was writing things on the board, but Kokomi's attention went somewhere else. More specifically to how the older woman's ass was perfectly shaped by the black jeans she was wearing. The braid holding her long and extravagant purple hair was swaying side to side too, making sure the student's eyes were always at her bottom.
"I had to stop a very important academic research to take care of this class for a friend, so I hope you all know that I won't tolerate any kind of childish behavior or people slacking off. " Oh no, she was walking towards the class now, and Kokomi suddenly regretted taking the first seat. She was getting dizzy. "I've heard that this class is a very advanced one, so I hope there won't be any disappointments. Do I make myself clear?"
Now she was standing right beside Kokomi. Great.
Her smell was sweet, but not too strong. It reminded the pink-haired girl of lavender melon, a classy one. She just hoped no one had caught her sniffing the air or trying to push her skirt down a little more because she suddenly felt undressed.
For the first time ever, the class answered in a unanimous 'Yes'; apparently everyone was terrified by the beautiful, tall and intimidating woman in front of them.
"Good." Raiden said before returning to her position as teacher. Kokomi was once again hypnotized by the way her braid swayed. How good would it feel to touch that hair?
Why the fuck am I acting like I've never seen a woman in my life? Get your shit together, Kokomi.
That thought was discarded as fast as it came. Raiden began her lecture about the past policies of Inazuma across Teyvat and every one of her sharp words went directly to the middle of Kokomi's legs. It was getting ridiculous at that point, and even if she tried to focus only on the historical content, her teacher's cold voice wouldn't let her rest.
Class passed with Kokomi intensively looking at Raiden only to look somewhere else when the teacher returned said looks. Her notepad, which usually ended up full of words and topics for future debates, was empty because her mind was too busy creating sexual scenarios between her and her teacher. She didn't even dare to look down at sudden humidity between her thighs.
"Class dismissed." Kokomi let out a breath she didn't know she was holding, and after struggling a bit to get off her seat properly, she felt frozen into the place as Raiden spoke to her. "Miss Sangonomiya Kokomi, you stay."
I'm going to die.
"W-what can I do for you, Professor Raiden?" All her colleagues have left by then, leaving the two of them alone.
"Sit." Fuck, yes.
"S-sure." She took the chair beside Raiden's table and carefully took a seat. She needed to change panties urgently.
"I was going through the class records…" Raiden took out a paper file with black cover from inside her desk and started to flip it until she reached a particular page. "And here it says how you are the class leader and all of your impressive academic accomplishments. My friend also told me about your achievements."
"Professor Saiguu spoke about me?"
"Indeed." Raiden crossed her arms below her chest, making Kokomi gulp. "But what I saw today… isn't even close to how all these records made you look."
"I'm… sorry, Professor, I don't know what to say." I was so distracted on how bad I want you to fuck me that I forgot class existed. "I just had really bad days before the semester started, and it didn't help much that I'm hungover. Sorry, I'll take responsibility."
"You sure will." Kokomi's hands gripped the sides of her skirt roughly, her clothing suddenly felt so thin and tight. "But are you okay? Drinking until you get a hangover isn't a good thing, and I sure don't take you for a party girl."
Should Kokomi talk about her private life with a woman she met less than 4 hours ago? Surely not! But the way she looked at her was so hot, how could she even resist? "I kind of broke up with my boyfriend three days ago, and even if I didn't like him that much, he still was my first and only relationship, so it's a little bit of a drastic life change." She was sure she wasn't seeing things, but the little expression of satisfaction that took over her teacher's face for less than two seconds was still hard to believe.
"Hm, I had my fair amount of relationships in life, but when you're in your thirties, it can get rather annoying if you're not married already. Dealing with women can be so complicated." She was into women? "I suggest you keep up the good work here, it's your future, after all. Focus on building your life first, then you can worry about relationships."
"I fully understand it, Professor Raiden."
"Great. Now go, I hope I don't catch you slipping tomorrow, Sangonomiya, I'm quite experienced with punishments."
Okay, this is too much, I'm already dying. Am I a masochist?
Kokomi didn't know why, but she stood up in a second and bowed to the woman before storming off the class. Little did she know Raiden was staring at the door with a smirk on her lips, knowing very well how Kokomi was lying.
It was going to be a long semester.
The day went by without any major problems, but Kokomi still couldn’t take her teacher out of her head. That long and beautiful purple hair carefully braided, her equally pretty purple eyes that seemed to shine like neon against light, the cute beauty mark at the left side of her cheeks, the mature body of a fully grown woman which was greatly highlighted by her tight black jeans and white bottom shirt. And finally the long and manicured fingers that would fit so good inside her-
For fuck’s sake, not again!
Kokomi had just gotten out of a shower, where she managed to calm down through very cold water. She inhaled deeply, feeling her body get shamefully hot again. Looking down at herself, she stared at her pajamas, composed by an old babydoll and simple cloth shorts. It was her usual sleeping outfit because it felt comfortable, but then it was suddenly too tight on her burning skin. Her right hand slowly went to caress the area around her exposed belly button. Didn’t take too long for images of Raiden to flood her mind, as if she was the one doing this. She felt her clit twitching and sighed, ready to let lust consume her thoughts for the first time in her life.
The girl looked around and went to lock the door of her room. Ayaka had a family dinner that night and wouldn’t be back until the next day, and if anything happened she had a key anyways. Walking to the bed in slow steps, Kokomi still did not believe what she was about to do. It went against all the beliefs that she had shoved down her throat while growing up, and now she was about to break them all because of a woman that she met today? Hell yes.
Laying on the bed, she didn’t really know what to do since even the thought of masturbation was completely out of her reach. Maybe the internet could help, but it was way too dangerous to do it knowing the content that might show up, and Ayaka would be really mad at her if she knew Kokomi was watching porn. And thinking of the Kamisato girl, she remembered how the other explained her first time doing it and how it involved a pillow.
Kokomi grabbed one of the pillows laying beside her and stared at it intensely, as if it would magically turn into her teacher. She positioned it between her thighs and gave it a try, feeling it bump against her sex, making her sigh. Her fantasy went back to when the older woman was touching her stomach, but now it was a lot more detailed. Raiden’s long fingers traced patterns on her skin and instead of going to where she wanted the most, the woman kept teasing her.
“I’m quite experienced with punishments.”
Her hips bucked intensively against the pillow after the teacher’s voice played inside her head. It was useless to try and resist her own mind now. It was taken over by a lust fog only giving space for her to think about Raiden, Raiden and Raiden.
She held the pillow firmly against her still clothed pussy while her hips humped it more aggressively. Her mind pictured Raiden’s head in the middle of her legs teasing her cunt with her tongue. Now she was moaning out loud, enjoying all the privacy that an empty dorm room could provide. Her fantasy changed to her teacher’s long and delicious fingers pounding her as she was bent over her classroom table. Kokomi wasn’t sure whether that was a byproduct of years and years suppressing her own sexual desires, but she was surely having a blast now imagining how it wouldn’t be so bad if she was fucked in the middle of class with risks of getting caught - or even better, in front of everyone.
The girl bit her lip intensively as her hips bucked against the poor pillow even faster, the wetness now visible between it and her shorts. She pictured Raiden’s eyes glowing at her from the darkness of her room like she was just a prey at her mercy, waiting to be split apart. Suddenly the need to rip her clothes off became unbearable. She moved the pillow aside for a moment, whining at the loss of contact and proceeded to get rid of her top clothing, letting her breasts free.
Kokomi moaned as she pinched her own nipples, once again thinking about Raiden doing so. Letting one of her breasts free, she moved her right hand to her shorts only to push the clothing to the side. She was desperate. The girl sighed feeling the cold air of her room making contact with the wetness dripping from her sex, then proceeded to put the pillow under her hips, ready to ride it as if it was her teacher's thighs.
"Hmm…Professor R-Raiden...a-ah!" Her hands went back to the task of squeezing her own tits while she rode the pillow with her now bare pussy. "G-good...so good...ngh…"
Every bump against her clit released a heatwave through her whole body, making Kokomi think that she was melting. She could stay under the spell of this pleasure for the rest of her life. Why did she deny herself of this for so long? After repeating her teacher's voice in her head one last time, she screamed as she reached the climax for (probably) the first time ever. Losing all control on her hip's rhythm, the girl's vision went blank and she fell on the bed, completely wasted.
Her breath was heavy and she could hear her heart pounding against her chest. The warmth wrapping up her body was probably one of the best feelings to ever exist, losing only to the one she had during her orgasm. It felt…...liberating, in some way. Similar to winning a debate during a simulation in one of her classes, but debates wouldn't leave her with her legs weak and almost drooling. Orgasms were fucking amazing, she'd definitely have more of those.
One of her hands went to her still twitching pussy, collecting the fluids leaking from there and bringing it back to her mouth. It tasted weird at first, but just the act of doing something like this already made the girl moan. Her mind got lost in the thought of Raiden doing this to her, and just like this the urge to continue her little self-care session came back with full force.
The rest of the night served the purpose of making Kokomi be sure of one thing: She was going to make that woman fuck her.