Would you believe it if someone told you that Genryusai Shigekuni Yamamoto had a son? And that same child was killed by a hollow? Most people wouldn't he's the son of THE Yamamoto the strongest Shinigami ever, he'd have to be strong like his old man right?...right..? Well that's the funny thing about power just because someone is strong doesn't mean their child is. And that's one of the "sad" truths about this world we live in. Anyway, meet Y/n Hitsugaya the long lost brother of Tōshirō Hitsugaya. Well not as much of "Long lost" than ran away from home and now is living with the Kurosaki family. When is home is attacked by a hollow Y/n and his adoptive brother are thrown into the world of Shinigami.