Satoru and you both went to jujutsu tech, one day while on a mission with Satoru you both came across an old lady having some trouble with her bags Satoru being the nice person he is helped the old lady even though you told him not to since you didn't trust people easily, but as soon as satoru helped her the old lady turned into a witch and cursed Satoru to turn into a little toddler, Satoru still had his memories and still acted like an teenager

Satoru:"what just happened!?-" satoru pouts