I'm in need of an OI where the FMC has a little brother/child that is her main supporter

I mean not stories where the MLC has a child who is FMC #1 fan or something. I mean a child related to FMC.

Bonus if it's funny how the child reacts against the MLC.

Is there any good rec? I have read I will change the genre/The Villainess changes the script.

Thank you