If I Become a Perfect God.Mayuko starts feeling the effects of wearing the mask. A distressed Yuri offers Mayuko to sit out, but she refuses. As they make their way to Yoshida, they reach a library where they find Bat Mask. Mayuko rashly attacks him, but gets knocked out. Sniper Mask then show up and kills him. Thinking that he is an enemy, they run away. However, Sniper Mask hoped they could all team up. Afterwards, he recalls an encounter with Rika. He also recalls how he became an Angel; it was forcibly put on him by Yayoi Kusakabe, an Angel in a police uniform...