Chapter Text
Alphys felt her heartbeat pounding in her ears as her fingers gently traced over the knot she had just finished tying on her girlfriend. It was a pentagram knot, which got it’s name from the endearingly edgy pentagram displayed on the chest and continuing to loop around the back, keeping Undyne’s arms firmly in place. Perfect.
“You did that pretty fast, you fucking weeb.”
Undyne’s tone was light, but Alphys could see that her dick was already partially erect, pressing against her cute red panties.
“M-my interest in bondage has nothing to do with the fact that I watch anime,” she protested, knowing her girlfriend was just trying to play off the fact that she was into it too. “However, it has everything to do with the fact that I w-watch hentai.”
“Isn’t that the same thing?” Undyne was grinning, shaking her ass playfully at Alphys, who held her hips to stop it.
“H-hey! I’m d-domming you now!” she stuttered out, trying to convince herself as much as Undyne that she was in charge now.
Undyne turned around, breaking out of Alphys’ weak grip on her ass.
“Hon, I know you are,” she said, smiling gently now. “And trust me, I’m super fucking into it. But you
need to be more confident with this! When I dom you, what am I like?”
Alphys blushed, now looking at the front of her handiwork. The pentagram was perfectly in place, squishing Undyne’s breasts in the near expertly-tied knot. “Super hot,” she choked out.
“But like, characteristics, you gay idiot.” Undyne pressed her chest out slightly, watching her easily aroused girlfriend turn different shades of red.
Alphys giggled nervously. “I dunno, you’re rough and commanding. But you always make sure I’m okay with things.”
Undyne raised her eyebrows pointedly.
“Y- oh fine,” Alphys pouted. “But I dunno, I can’t help but feel like I’m being mean.” She tucked her fingers into the waistband of Undyne’s panties and pulled her closer, burying her nose in her girlfriend’s shoulder. “I want you to feel amazing all the time.”
Undyne kissed the top of her head. “I’ve slapped you in the face and drawn blood from you with an actual, literal knife. You know as well as I do that it does feel amazing, sweetheart.”
Alphys smiled. “I- I guess you’re right. You’re always right and you’re so hot and-“ She paused for a second. “I just... I may have a weird request. F-for you.”
“Anything, hon.”
“Could you, uh. Could maybe... uh...” Alphys quickly mumbled something unintelligible.
“What... what did you just say and then maybe I’ll be able to consider it,” Undyne teased.
Alphys turned the darkest shade of red Undyne had ever seen.
Alphys took a deep breath and then spoke in a quiet voice. “Could you kinda... act like a brat?”
Undyne shivered. “Thats really hot. Yeah. I can definitely do that.”
Then she smirked. “But do you think you can handle it, sweetheart?”
Alphys took a very sudden step forward that shoved her girlfriend back against the door and pushed her knee in between Undyne’s legs. Before she had time to react, Alphys grabbed at a handful of rope and pulled her face down to give her girlfriend a gentle kiss.
“I think I can handle it.”