Mitsuki, a female student, visits her reclusive classmate Ken-ta's house. However, no one answers when she presses the intercom. As she's about to leave after putting a print in the mailbox, a man named Hajime appears. He introduces himself as Ken-ta's father and calls his own son a "screw-up." Enraged by these words, Mitsuki ignores Hajime's protests and enters Ken-ta's room. Ken-ta, who was standing there, immediately grabs her and forces himself on her...