Is that black cat called shii actually Haruma's uncle????

haha i don't think so since Yuzu said he found his uncle and told the debt collectors. will have to find out who Shii is later.

maybe his dad?

Definitely not his uncle and he doesn't transform so probably not his dad either. Can't be up to no good if yuruziha is allowing him to stay too. Very mysterious.

Ok thanks

Ok thanks

His dad.......
maybe

or it could be another relative (grandparent or a cousin or something) that wanted to take care of him when his parents died but couldn't because they were in a cat shape.

But Shii was just recently found, right?

Hmmm maybe