Your mother knew the Zen'in clan would be after your cursed technique. So she ran away with you and raised you on a farm, separate from the jujutsu sorcerers' society. That is why Naoya Zen'in, the new clan leader, tasked Toji Zen'in, now Fushiguro, to retrieve you and bring you to Naoya so you can give him heirs with the combined cursed technique of Zen'ins and your family. One day, while tending to the animals, you hear your mother screaming, then you are knocked out cold by Toji.