Because you like Germany in Axis Powers Hetalia

The vampire that killed Zero Kiryu's family also infected him, and he starts to crave blood, much to his horror. See them in Vampire Knight.

A laid-back wanderer, Ginko has an empathetic, open-minded worldview. See them in Mushishi.

Konata Izumi has a live-now, worry-later view of the world. See them in Lucky Star.

He's the great Black Star, and he's come to assassinate you. See them in Soul Eater.

Firo Prochainezo is swept up in a world of mysterious women, alchemists, and rumors of a wine that makes it drinkers immortal. See them in Baccano!.

Shana is a red-haired warrior with a black-and-white worldview. See them in Shakugan no Shana.

If Anna Liebert could remember her past, maybe she would know who she is. See them in Monster (TV Show).

The main priority for Nagisa Hazuki is making sure that everyone has fun. See them in Free! Iwatobi Swim Club.

Given his ability to wrench street signs from the ground, Shizuo Heiwajima is a useful one to have in dangerous Ikekuburo. See them in Durarara!!.

Misaki Nakahara is keeping tabs on her newest project: recluse Tatsuhiro Sato. See them in Welcome to the NHK.

Everyone is just a chess piece, and Izaya Orihara is a master player. See them in Durarara!!.

When Rin Matsuoka is not swimming, he mostly spends his time brooding or listening to angry Dubstep. See them in Free! Iwatobi Swim Club.