Imouto Bitch ni Shiboraretai  

여동생 Bitch에게 짜내지고 싶어, 妹ビッチに搾られたい, I Want To Be Squeezed By My Bitch Sister

If Mina accepts an invitation at the last minute to attend a gathering, she is taken aback when she sees her sibling seated opposite her. Despite this, she chooses not to disclose this information to her fellow attendees-even when the game they are playing becomes increasingly erotic in nature. Meanwhile, Sayaka's relationship with her brother undergoes a transformation when he stumbles upon a gaping hole in their shared wall at waist level. It remains uncertain whether Sayaka will become aware of her brother observing her most intimate moments.