Onikirimaru 鬼の殺害者

From a cooling ogre's corps, a human looking boy is born. Though pure blooded ogre, he does not possess a horn nor a name, but instead of a horn, he was born with a sword in wich it's name is "Onikirimaru". Traveling the lands, he lives to kill his own kind in hopes of becoming true human as he is always being refered to by his sword.