Because you like Lexie Grey in Grey's Anatomy

Other people's opinions have never mattered much to Haruka Nanase, and they aren't going to start to do so now. See them in Free! Iwatobi Swim Club.

A vain and arrogant womanizer, Roy Mustang has hidden depths. See them in Fullmetal Alchemist.

The son of Death has an obsession with perfection and symmetry. See them in Soul Eater.

Sasuke's quest for vengeance is above all else. See them in Naruto.