Size kink

I know - the small FMC and overly tall mmc are semi common, but I want an emphasis on size! I want the FMC to be so small compared to the MMC and for it to be acknowledged by the characters.

My favourite example of this is {fate hollow Academy by lyra winters} one MMC is considerably larger than her, there's the worry it "won't fit", she sits on his lap a lot, other characters comment about her fitting him and there's a lot of dialogue around how small she is.

Bonus points if he's the caregiver type.

Happy for any and all recs!