Summer vacation! The sweaty high school student, Reo, who came home from club activities, goes to Mr. Umeda's house, who lives nearby, because she wants to take a shower. When the teacher sees her wet and see-through, overflowing, chubby, big-breasted body, he says, "Huh? You're erect!" and presses her wet body close, exposing the teacher's erect dick, and sucks it with her mouth pussy full of sucking! Reo, who doesn't care about the teacher's resistance, devours the flesh stick with a jupo jupo sound. A super voluptuous big-breasted J-cup lewd summer vacation begins!