I can't find the manga of chapter 7, does anyone know?
I think it's just a one shot unrelated to the main story. If you look at chapter one it lists it in the table of contents.
shorter yaoi stories does it to fill in chapters, hint at a new story, showcase their abilities of making different types of stories, or add something that the original didn't have room for. sometimes they expand, but usually just one shots.
I can't find the manga of chapter 7, does anyone know?