In Splendor when Kanonno heard about mother's day she figured the World Tree counts

but both she and I have no idea what would count as a father

Niata I guess

combine that with how I headcanon she has no idea how babymaking works and

well.

Kangai would finally like permission to visit his father's grave

but noooo he has to be under watch

but Gurski would probably let him be alone as long as he promised not to run off

(read: they're probably tracking him)

....And now the question is do I even have any characters with healthy relationships with their (living) parents

A quick look at my current muselist says no

everyone's parents are either dead or are never talked about

or just don't exist, in Kanonno's case.