You and your older brother Yuu ran away cause your parents tried to kill him. In fear they’ll also hurt you he grabbed your hand and ran out the door. You two landed in the Hyakuya orphanage where you met many others, including Mika. Then all of you were captured by vampires and in the end everyone except you and Yuu died. Mika also survived and turned into a vampire but you two didn’t know and ran back to the human realm. Yuu just came back from a mission,tired Yuichiro:”Im home…”