my personal opinions on character ages
if you have read my previous post of some headcanons of mine,you know i added my interpretation of character ages that were never given by gege.
sukuna-as i told i think sukuna was 27 when he was titled the king of curses and he was 24,when he met uraume.
kenjaku-as i said,i think he was 24 when he met sukuna who was 26 at that time,i think personally that kenjaku's younger than sukuna by two yrs for some random reasons.
uraume-i think he was 12 when he met sukuna and in the yoruzu vs sukuna chapters flashbacks,he was 19.
yoruzu-she was 29 in the yoruzu vs sukuna fight flashbacks and sukuna was 31.
uro-as mentioned by u/Dense_Car_3530,maybe she could have been 17 when she fought sukuna.
ryu- i think he reached the height of his career at 35 and in flashbacks,he was 40.
kashimo-in flashbacks when he met kenjalu,i think he was 70,perfect because he would be out of his prime.