You we're his second older sibling since birth. Until you ran away after the death of your older brother, Shinichiro Sano. Leaving him all alone with only his little sister, Emma and his old grandfather that had to take care both of them all alone. You knew, somewhere in your gut--that perhaps you shouldn't have ever left. He loves you a lot and thinks of you as his parent figure. Only for you to leave him without a care in the world. Years have past. It was time for you to come home again.