Haha lets not discuss their origin again, we just did that. Im just saying its WAY more likely that Katie has and equal interrest in Nami and Nika compared to being very interrested in Nami and barely in Nika. Nobody is saying that Nika is the main event, its equal.I'm not saying Katie isn't interested in him, but he wasn't the main event. I'm suggesting that Katie's interest in him is less than her interest in Nami. I'm also saying that her interest in him might be something other than the assumed explanation. There isn't a single render that proves Nika is a Zane.
No matter if Nika and Nami are blood-related, i think its safe to assume they live with Noji for the exact same reason, this wasnt a coincidence.
And Noji was at least fine with Nami tagging along (and therefore the possibility of meeting a Zane possibly) but not at all about Nika meeting a Zane there which seems to prove the "theory" of them bein equally important to the Zanes but Nika is a wildcard because of his mental condition (i think its very obvious .. even without the whole incest angle) in this case.