What kind of "mature subject matter" will be permissible in League's lore?

Just curious, but what sorts of mature subjects would you say are off-limits?

For instance, would you ever permit something like the following?

The scene is a Piltover apartment (or something of the sort) in the morning. Janna wakes up after a rather... intimate night from her latest tryst. She's up before her consort, and leaves him before he even wakes up (in keeping with her "never gets tied to one man" personality).

No actual sex shown, but you can tell she was at it the previous night. Too raunchy for your authors?