From one to three (TCF fanfic)

Cale Henituse got another deal
He will regress to when he was 4 years old
Cale accepted it and he is now in his 4 years old body but not just that he got a baby brother who is called Kim

A few years later when Cale is 8 and Kim is 4 years old they somehow end up in another world or should I say another universe