Oh no it's a manga / anime
sigh ... I should have googled it.
Feels like when I see a lovely red strawberry growing in my garden, and I go to pick it, it but the entire backside of it has been eaten by a slug ... and the slug is still there, munching, and I touched it, ew ew ew. Or like stepping in cold kitten vomit.
I was kind of interested to see it linked in blue on btn (to a Greek name meaning joy, pronounced kha- apparently, could be ka- to an English speaker) and thought Undertale was the only usurpation. (I sometimes feel like mass/pop culture hoovers up all of the most simple, obvious names that people could revive, borrow, or invent in English and use for children, and contaminates them by associating them with some dumb character nobody would want to be named after and nobody will remember after 20 years.)
Well, this is what the opinions board is for! I'm glad you commented about it.
- mirfak