A loser NEET turtle who only thinks about butts. Turtle's childhood friend, the black gyaru Ranka, is extremely lonely and comes to Turtle's house almost every day, relaxing and killing time as if it were her own home. Although Turtle never saw Ranka as a romantic interest, he can't help but get an erection from looking at Ranka's butt and ends up getting caught by her while masturbating. Unable to hold back, Turtle buries his face in Ranka's butt and ends up having sex with his childhood friend...
