Very mild sexual jokes.

There is a girl that writes 18+ mangas. (Supporting character) It's not lingered on and only mentioned or talked about infrequently.

One scene takes place in hot springs with characters in towels.

Sometimes characters change, nothing sexual.

Every episode contains fan service that will make younger viewers uncomfortable. 10+

The Intro has one of the main characters nosebleed,while in space and punched by three of the girls, but it's played for jokes.

One of the main characters gets a nosebleed whenever he gets overly excited. Nothing else violent or gory.

Nothing stronger than "Damn" or "hell"

Episode 6 has a parody of an underage drinking campaign by Brewers Association of Japan In which the second time it is shown, Miu mumbles 'I promised.." before passing out.