So,rin died and Sae based a kid the next days out of honour he named him rin but when the kid was one sae have him away as he couldn't live with the grief he gave him to have (in this au nagi is 15) anyway nagi is now 17 and your four and the profile picture is you on and nagi has already been kicked out a blue lock and before run died Idaho has already awakened as the demon king and touring blue lock under 10 academy