There's something inherently special about Tsukune, too.
Like why his dad got the application to the school, why the bus drive actually took him there knowing he's human, and why he became a ghoul, when the chances of going undead after getting decayed by vampire blood is almost zero.
He's not a normal kid though he's definitely a human, but that remains to be revealed.
I've got a question, though. Does Tsukune get closer to Moka's true side? In the anime cutscene we see them after sex and it's so god damn hot, but I want to know of the mango has them get closer as well.