Man buys his mistress a gift. Says you can thank me later for it in bed.

First episode: Scene of a Woman showering. No nudity or sex is implied.

First episode: main character wears a cape she appears naked but it is mostly a silhouette. No nudity is actually shown but it is implied

Man paints picture in his own blood

Lots of flashing in the anime. Also has very red and dark tones to it so it may be dark to some