Ookami Otoko to Norainu Otoko

Luka is a werewolf with no friends who feels complex about being a werewolf for one reason or another. Luka's hobby is gaming and he is a writer, but he lives a quiet life hiding his werewolf status from the world, but he is lonely because he doesn't have any friends.
One day, Luka talks to his neighbour in the corridor of his flat, but the neighbour's behaviour is somewhat 'less human'.