[Uberzaki]

I think that umineko actually draws some (very slight) parallels with the visual novel known as CROSS CHANNEL.

Notably,

Spoiler for for CROSS CHANNEL up to ending:

The main (male) character is raped by a rich family (and a wealth of other people) continuously while being placed in a gaudy dress, aparently he's a bishounen. Not only that, he has cat like tendencies and ends up creating an alternative universe where only his best friends exist, who may or may not be real in the objective sense

Wierdly enough, the author, Romeo Tanaka (RT) worked on Rewrite with Ryukishi.

So yeah, Kinzo could have ended up raping an effeminate looking boy, which is what Kanon looks like.