Something worth mentioning is that Magical Librarian Ariana, unlike the last games published by Compile Heart which, yes, are rated B but they are still rated B *because* they have fanservice to an extent (it's the only reason why the Mado Monogatari game is rated B apparently) and so, the icons on the back of the box and online listings reflect that, well, not in the case of the new game, the only icons that Magical Librarian Ariana has as reasons why the game is rated B is the gun (crime, which can almost be a variant of violence or the icon of the knife) and, probably for the first time in a Compile Heart game, swearing or offensive language (the ''x'' inside a speech bubble). Having said all that, does this mean that the new Compile Heart game is very, very tame when it comes to fanservice even compared to other Compile Heart games?...probably.
Source if you want to see for yourself: https://store.playstation.com/ja-jp/concept/10013771