Ami moaned in pleasure, running her fingers through Minako's hair. She was lying on her back with the other girl between her legs, teasing her pussy with her tongue. Minako spread her lips with her fingers, pressed the tip of her tongue to her clit and moved it in slow circles. Minako loved to tease and she knew exactly how. During a few of their late night sessions, it would be hours before Ami came a single time. It had only been a few minutes so far and Ami was already breathing heavily and shuddering.
"Please, just make me cum. I can't take it anymore!" Ami moaned.
Minako decided to be nice tonight. She smirked as she slid her tongue inside of Ami's wet pussy. She twisted it inside of her, moaning as she tasted her juices. Ami dragged her nails over her back and squirmed underneath her as she felt her orgasm build quickly. Seconds later, Ami screamed and came. "Ooooh, Usagi!" she moaned.
Minako froze instantly. Ami did a second later, her eyes opening wide when she realized what she just said. Minako got up to her knees, glaring down at Ami. "Usagi? Is that who you think about when we fuck?" she asked angrily.
"N-no. I didn't- I wasn't thinking. I didn't mean-"
Before she could finish, Minako struck her hard across the face with the back of her hand. Her face was flushed red and she didn't say a word. She stood up, went over to the closet, and came back with four scarves in her hand. She turned Ami onto her back and used the first one to tie her wrists together tightly.
"Mina, what are you-"
Another scarf being shoved into her mouth cut her off, and the third was tied around her head into a cleave gag. Minako tied the last one around her ankles. She positioned her so that her legs were bent underneath her and her ass was exposed, then moved behind her.
"I've been too easy on you. It's time I teach you a lesson," she said. There was a flash of light and she was in her Senshi form. She grabbed the chain wrapped around her waist, unfurled it, holding it like a whip, and brought it down on the bound girl's ass, leaving heart-shaped imprints.
Ami screamed a muffled protest, trying to squirm away, but Minako didn't give her a chance. She whipped her again, harder this time. She didn't stop until the metal chain left red marks crisscrossed all over her ass and thighs. By the time she was done, Ami was whimpering and nearly in tears. She wrapped the chain back around her waist, took off Ami's gag, and grabbed her roughly by her hair. "Who do you belong to, slut?" she asked.
"I-I belong to you," Ami answers.
Minako slapped her ass, making her whimper. "Say it right."
"I'm y-yours Mistress Mina."
"My what?"
"Your dirty fucking slut!" she screamed.
Minako let go of her hair and caressed her cheek more gently. "Now I'm going to make you scream my name until your throat is raw. I'm going to fuck your pussy sore." She put a blindfold on Ami and rolled her onto her back. She untied her ankles so that she could spread her legs, and Ami gave herself up to her mistress. Venus smirked. She was going to have fun tonight.