It occasionally cuts away to the "false realm" from the other Hello Charlotte games, but nothing particularly surreal happens, and these are clearly separated from the main story.
Charles's mom doesn't physically abuse him but she takes her anger out on things around him and he feels responsible. It is also heavily implied Vincent is abused by whoever he is living with, to the point that Charles states that they don't treat him well.
Bennett is present and he's addicted to soap. There's also mention of drug addiction as the apartment Charles lives in was owned by an addict who died of overdose.
There are mentions of bodies found on the shore and it is believed they died as a result of suicide so one could make the assumption that that is how they died, but it isn't explicitly stated.