There is a moment where Satou shares a bath with Shio, though nothing sexual takes place between them. There are moments where the two share a kiss with each other, but it is also not played as intimate.

A girl says to her best friend "You are always wearing un-sexy underwear too".

A girl starts to undo her school uniform in front of her teacher and his family. Her bra is shown.

Satou herself is revealed to be mentally unstable, and resorts to doing inhumane actions in order to keep her "happy life" with Shio.

Satou gouges two thugs' eyes out.

Since Satou is a yandere girl, she kills a lot of people. Scenes are somewhat graphic.

There are moments where Satou has mental breakdowns represented by her eyes becoming blood-red.

Happy Sugar Life's story is like something that could actually be happening somewhere in this world right now and can get uncomfortably real at times.