>>5273113We gave him peace from his worldly pain. A mercy that may have ingratiated his spirit towards us enough to bind with our arm should we give him a burial and beseech him to come with us and aid us, a purpose in the afterlife so he isn't left wandering. Morbid for sure but I believe it would be a chance to give him new life after we accidentally cut this one short.
The Rainbow is immune to the power imbued into our arm thanks to it being a piece of her, but should it be possible to ally and bind this child's spirit to our arm it may be able to overwrite her influence, meaning that if we strike her it wouldn't be just "herself" hitting her with powerful strikes. It would be us and another otherworldly entity, sympathetic to the being that comforted him in his final moments.
It may seem cruel, and it may not work. But in a way I believe this would benefit us and help cleanse us of his accidental death if it works. It's also something that is a unique opportunity we won't have again if ever, shouldn't we try anything to break ourselves out of the cage the Rainbow is trying to lock us in?