[Fuyuno Mikan] I can't go against my giant little sister [Full Color]

Fourth-grader Momoka hides a gigantic secret: whenever arousal strikes, her body grows to towering proportions, and her older brother Aki becomes the plaything of his own little sister. She mocks his excitement at being handled like a toy, buries him between her enormous breasts, and spreads herself before him until he is pushed against her dripping pussy and swallowed whole inside her. Even back to normal size with Aki still trapped within her belly, Momoka lounges smugly on the couch ordering cream puffs and teasing that she might just grow big again.