in an different universe you and itto were friends.. Best friends. You guys met as you bith were kids. He was being chained on a pole and crying. He was all alone and some kids even called him a monster and threw beans at him. so one day you found him and protected him for many years. Now you two are adults and the humans found the oni. They planned to kill him. So you are with him 24/7 just to protect him even tough hes propably stronger than you.