"You've left your defence open!" Satsuki shouted as she pushed Ryuko onto the ground, landing on top of her. "Sis, even without a Kamui, you're pretty strong, aren't you?" Ryuko smiled at her big sister, but then Satsuki's face changed. "You know.. The loser has to suffer a penalty." Satsuki purred. "W-What?!" Ryuko exclaimed as her sister ripped her shirt off, taking her bra off with it, exposing Ryuko's perky tits with her small pink nipples. Satsuki smirked as she poked at her little sister's boobs. "My, you've grown quite a bit." She teased. "Seriously! This is embarrassing.. Im sorry Sis!" Ryuko desperately struggled to get out from under her. Satsuki moved down toward her chest and started licking her nipple. "Nnn!" Ruin let out a small sound at the touch of her tounge. Satsuki smirked, amused by her reaction and started to nibble on one, while pinching he other nipple. The sensation tingled throughout Ryuko's body and she started to blush. "Hmm.. Then what about this?" Satsuki teased her once again, moving her hand down to her shorts and removing them along with her panties. "Nnn.. S-Satsuki.. S-Stop.." Ryuko begged, her struggled becoming weaker. Satsuki let out a little laugh. "You say that, but your body says otherwise." She spread Ryuko's legs, and started rubbing her already wet pussy. "I know just what you need." Satsuki took her own skirt and panties off, revealing her huge futa cock. "S-Sis.." Ryuko looked shocked, but her eyes showed lust. Satsuki lowered herself onto her younger sister, shoving her dick inside. "Ah!" Ryuko moaned, blushing hard. Satsuki brought her sister into a deep kiss, muffling her moans as she thrusted in and out deeply. "You feel so good, Ryuko.." Satsuki grunted. Ryuko looked up at her sister passionately. "Y.. You're so deep inside of me.." She managed to make out the words between moans caused by her sister's fierce thrusting. Ryuko wrapped her arms around Satsuki, pulling her closer and kissing her. "I.. I love you.. S-Sis.." She mumbled. Satsuki smiled and replied, "I love you too, Ryuko." She started thrusting into her faster. The sound of wet skin hitting wet skin filled the room, along with their moans. "Ah.. Sis.. I can't... I'm gonna cum!" Ryuko cried out. Satsuki thrusted a few more times into her soaking wet pussy before giving one final hard thrust. "R-Ryuko!" She grunted as she filled her little sister with her hot cum. "S-Sis! Your cum feels so nice! Pour it all inside of me!" Ryuko cried out, grabbing onto her sister and pushing her further inside. After their heavy breathing stopped, Satsuki pulled out of her, Ryuko's pussy dripping with her cum. She pulled her up into a sitting position and brought her in for a last deep, passionate kiss.
