Yeah... this is complicated. Basically, a bunch of high school kids do the do in the photography club. From what I know, in the manga, the characters are of age and the creator of the manga did not consent to the anime being made (I could be off on this but I can't find much info on it so please correct me if I'm wrong). They aged the characters down for the anime, which makes it borderline cp. Gotta admit the intro is a bop though. I'm not very good with writing so I'm sorry for any grammar or spelling mistakes (I also wrote this much later at night than I should be awake).