Well,it was just a moment of thing,no one expected that coming.He totally wasn't expecting so he just look down to baby dump-foolded a few minutes when he saw them.Thank to Kurogiri baby has raised well, shigaraki learning how to be a father the them.

In current timeline, where shigaraki become the leader of the paranormal liberal front.He was sitting up,his one leg was broken so a few men of him near to him.Everyone was in silent till you come in with toga,you run up to him and sit his lap.

"Father!"