One time, the main character realized that this is the world of manga. And it's the world of boys' love. In order to protect the position of mob, the main character read a lot of BL manga, learned the scenes (flags) that were likely to progress in love, and decided to avoid it. However, the LOVE flag that scatters one after another with such a main character... Will you be able to protect "mob" = "chastity" until the end?