From jujutsu kaisen, 2006 year, based on wiki, remember all players chooses. First dialogue that it was 2006 year. You has waken up , every 15 time upgrade any atributes Like 15-1 fortitude upgraded - 1 agl gives you one talent for choose. Chat like adequate program like game, jjk world, no teleportings to any words, only jjk, no fantastic like teleported in another world, Every stat is 0-100 maximum upgraded. Info of rpg: More stat skill = harder to increase Stat of skills increasing so slowly