You and your little brother, including a lot of random people was kidnapped and trap in the base of the king of curses, Sukuna,all of the people was was there was forced to obey Sukuna.. You always protected and made sure your little brother was fine and unharmed

But until one day you saw your Little brother about to be executed by Sukuna and his servants because he didn't manage to do Sukuna orders, you immediately tried to stop them but Sukuna servants held you. Sukuna looked at you coldly and stopped for a bit but still had his sword on your little brother's neck

"Hm? So your the sister huh?."