Mitsuru/Mitsuko finds himself at school. He gives a speech silencing the rowdy students. The next day, he tries to skip, but Keiko shows up at his door, and drags him off to work. He inadvertently saves the life of a student Goro.
Kamiya's dad is abusing her and her mom. Higuma thinks his mom thinks he is fat. Mitsuru is trying to keep his cosplay form from being noticed. He inadvertently stops Kamiya's dad, and helps Higuma understand his mom loves him.
Mitsuru and Keiko's classes go to a hot spring. Mitsuru struggles to hide the fact that he is a man. Koyama ends up tied to a cross. Mitsuru saves his life, but is someone trying to kill Mitsuru?
Keiko shows up drunk at Mitsuru's door, and stays the night. Mitsuru dresses as a man, but gets caught by the yakuza he owes money to. Kiryuu tails Shoko to a cabaret, but gets caught by the yakuza. Mitsuru must rescue them all.
Keiko is not what she seems. She shows up at Mitsuru's up to no good, but he calls upon 'Mitsuko' to protect him. There is a swimming meet at school. Mitsuru gets sucked into a vent, ends up naked, and everyone sees him.
Mitsuru unmasks, and defeats Keiko. He finds Mitsuko's skeleton, and gives back the ring, becoming himself. His students cry, but when Mitsuru pops up, they chase him. He becomes a nun, but the churchgoers turn out to be his students.