1. One is not not human, could be a mix between a vamp and a human. 2.ellie could be his dad. 3. He seems to be showing more vamp traits lately. Using perhomones and all, may be he will turn out to be real strong who knows. Mixed are top of both the species they r mixed of. ╮( ̄▽ ̄)╭
Why did he take it without telling yuri? Well, they have major communication issues. (〜 ̄△ ̄)〜