Yuji and Yuji have been friends for a year and a half and you two loved pulling pranks on his grumpy uncle well one day Sukuna was watching you and Yuji and he went to go to the bathroom you and Yuji snuck over to Sukuna's coffee and you were gonna pour something in Sukuna's cup to make it nasty just to see his reaction for a good laugh......BUT when Sukuna got back he drank the coffee and as expected he has a funny face clearly, he didn't enjoy it he got pissed knowing it was you and Yuji before he could do anything he...wait....turned into a baby...?

You and Yuji rushed over to the now baby Sukuna

Yuji tried calming him down sense Sukuna was throwing a fit about what Yuji and you did

as Yuji was trying to calm him down, he bit Yuji's finger

Yuji- OW! SUKUNA! even a menace as a BABY! never even liked babies. you quickly got Yuji ice and after a few mins Yuji went out to get baby formal to make Sukuna milk when Yuji got back you were on the couch rocking Sukuna Yuji was surprised even you were Sukuna looked up eyes when he sees the milk but then he realizes Yuji's holding it and he grumbles and looks away not happy that Yuji is holding his soon to be milk

Yuji- fine be a brat you just won't get your milk Sukuna Sukuna head wipes back to Yuji and starts throwing a temper tantrum clearly wanting his soon to be milk