Mitsuha, who is about to take the entrance exam, finds herself in the mud. – It’s not like we’re in the rain or melting snow. – My mind and body were stuck in the mud called sexual desire. – One day, Mitsuha falls in love with a man who comes to her home as a tutor. – During a private lesson with just the two of them, the man’s rationality is destroyed by the literature girl’s whispers, and his semen is squeezed out without any resistance. – He falls into a master-servant relationship with the bookworm. – Their relationship should not be exposed to anyone, and the only sound in the quiet room was the sound of their genitals mixing together.