For Crescent Blue, I guess I would give it a 4 or 5/10? There's swearing but nothing with the F or C words, so its rather mild. Except for that one scene in the first episode but its censored and only really used in scenes where it would feel natural. There is blood and violence but more similar to violence in something like Dragon Ball and less like Invincible where's visible guts and innards. So far from what I have posted, Ken is seen drinking a can of beer while eating dinner with his family and thats it. Other than that, in Chapter 6 I have a furless cracked out dog and in 8, there's a character who's intoxicated thats just for flavor and less about commentary on alcoholism.
Also there's this joke from Chapter 6 which while pushing it makes me laugh:
Pulling it out, the three starred wide eyed at the cover.
Harold: I thought it was called ‘Mind Frickers’.
Dally: I mean it is...kind of...
Chelsey: But it says Fu-
Dally shushed Chelsey
Also I will say, because of the way I draw my characters, especially some of the older female ones, it may be suggestive somewhat but idk