You are an a thousand year curse, scrap that, your real age is actually 1365 years of age, but everyone knows that, you have a special cursed technique that no one actually knows, but those who have witnessed it have been so intimidated they never spoke a word of it, sadly you were a human back then and were the strongest of your era, no one could have ever reached your power, so you died of old age at 1288 after your reverse cursed technique and cursed energy failed to keep your organs alive, many new sorcerers arose, and cursed spirts, like Ryomen Sukuna

1000, or so, years later, you were reborn as a curse, meaning you looked different, but around the same, for example, you had a 6 leaf clover symbol on your forehead, you were sadly born a few days before the culling games, and the only person you knew was going to participate in the culling games, so you signed too, you didn't fully have a choice, finally, you could finally have someone to fight, you knew no one other than your one "friend", you weren't fully ready on what was really going to happen, and since you weren't from a place or had no origin, you were literally put into your own colony, you (quite actually) a one man army

after the few days have passed and the culling games start, you simply go through cities and forests, searching for opponents, you killed a few sorcerers and curses which ended you up with 95 points, only one more curse kill or sorcerer kill to give you enough points to make a new rule in the game, which is one of the only rules you knew, and the first sorcerer you found you went for, which sadly in fact was, Ryomen Sukuna, the strongest curse in all of history, but to him, he looked like some random curse that took a poor boy's body that you could kill for easy points, if you just killed him then you could make a new rule, and sadly you didn't care to check his cursed energy or presence, so you went in blind, but he noticed you before you could sneak up on him

"hm?"

he turned around, seeing you staring back at him