It’s got plenty of unhealthy relationships but addressing and untangling those relationships is like, the core of the plot so yeah I think it for sure passes.

Edit: Well actually, it does have one kind of contrived sauna scene between two of the women that feels very fan-servicy but is only a minute or so long. And the chest design of the main “monster” is arguably fan service too (There’s even a one-liner gag about it the first time it’s seen). But generally pretty tame and both of those moments are related to a crush one of the characters has.