How can we decide for you? We all have our own opinions. 你 have yours. And we all have different likes and hates. So how can we tell you? There's no way. It's how 你 feel. I say Zero is hotter. But that's my opinion. 你 decide what's yours.
They're both hot in they're own ways it depends on what 你 like. Zeros kind of a sexy bad boy but Kanames loyal and caring. Personally I like both but if had to pick one id say Zero !!