Wotakoi: Love is Hard for Otaku (2018)

Some kisses. Nothing explicit happens.

Characters use the word "yaoi" pretty often. There can be seen yaoi manga covers, also referring to yaoi using "boy's love".

In one scene a girl frets about what color bra she is wearing, after getting the wrong impression that something was going to happen between her and a male.

There is often talk about Women's breast size

Hanako is in the bathtub. There is a pan on her legs that are sticking out (reaching up to a little above her knees), and then a closeup of her breasts that are sticking out slightly. This only lasts for a few seconds and played mainly for comedic effect as this is a running theme, but it can be quite uncomfortable.

Basiaclly nothing

The male protagonist can sometimes be seen smoking

The characters drink frequently. Sometimes a character gets drunk and tipsy, but nothing explicit happens.