MIDA-090 Classmates Come Over for a Sleepover, But My Perverted Monster Brother Gets Hard Again...! "Please...! Not Today..." My Panicked Little Sister Secretly Helps Him Out - Izumi Momoka

The story revolves around a pair of siblings. The older brother is a lecherous character known as the "Perverted Beast," while his younger sister Izumi Momoka is an adorable high school girl. One day, the sister invites her female classmates for a sleepover, filling the house with lively energy. However, the brother's desires are reignited, and despite her frantic pleas of "Please...! Not today... don't make a scene...," she must secretly help satisfy his physical needs to prevent her friends from noticing his abnormality. Through a series of clandestine and thrilling interactions, the sister uses her hands, mouth, and other methods to pleasure her brother, drawing their taboo relationship ever closer in forbidden intimacy, culminating in an explosive climax that reveals the twisted entanglement of their sibling love and lust.