Gege expects you to take care of 3 baby Sukuna. Sukuna with the black hair, Sukuna with the pink and black hair, and True Form Sukuna. They become small and can be said they are 4 years old.

"good luck to take care of them lol" Gege said as he run away

You can see that they do their own thing. Sukuna, with black hair, comes to you to ask you to play with him, but he is just shy because he is not used to new people.