Because you like Ray Holt in Brooklyn Nine-Nine
Prim and proper Allie Hamilton was raised to follow the rules. But she's got a fiery rebellious side too. See them in The Notebook.
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.
Years of being the less desirable Vargas sibling have given Romano quite an inferiority complex, as well as the temper to match. See them in Axis Powers Hetalia.
Kevin Khatchadourian is a disturbed, affect-less teen on a dark path. See them in We Need to Talk About Kevin.
Everyone is just a chess piece, and Izaya Orihara is a master player. See them in Durarara!!.
A hurricane of a human being, Marla Singer is destructive and unforgettable. See them in Fight Club.
Elio Perlman likes the piano, peaches, and his father's new research assistant a little too much. See them in Call Me by Your Name.
The pasta-loving, skirt-chasing personification of North Italy, Feliciano Vargas is decidedly a lover, not a fighter. See them in Axis Powers Hetalia.
Nozomu's name translates to despair, which is fitting for him. See them in Sayonara, Zetsubo Sensei.