crying so basically it takes place in the bpe au so sana or jihyo could've carried him, it's just that (aunt) nayeon taught him that jihyo's name isn't "mama" it's "jihyo" to annoy jihyo, and since jihyo is usually the stricter parent he's just got. like. a ton of beef with her. he throws tantrums and says "JIHYO YOU'RE BEING SO UNFAIR JIHYO I HATE YOU" because he learned it from nayeon. he grows to be super close with her, but since he's younger (at least in the comic) he doesn't GET why jihyo has to be the bad cop so to him she's just mean, so she doesn't deserve the "mama" moniker. that's for sana, who lets him stay up until 12am and eat ice cream for breakfast