While running back from buying a new porno magazine, Shūsuke bumps into another person. They get their packages mixed up and Shüsuke ends up with a Boy's Love magazine that he immediately rips to shreds. When the other party, known as Mister X, discovers about the mix up, he sends Shüsuke a threatening note demanding its return. That night, when Shüsuke attempts to make an exchange with Mister X using a different BL magazine, with Nao and Iroha stalking him, he learns Mister X's true identity is that of his class rep, Mayuka Kondö...