It's a cute series and all, but I want him to return to how the series began. I'd imagine that when they get close enough, he'll spill out his guts about his bloody desires and then isolates himself from everyone even further. It wont be fun if Yamada just accepts it, so she must struggle to come into terms with it herself first before trying to close the distance again. That is, she should definitely be afraid of him.
But I guess it would get too serious and mature then. Oh well.