Curse Back, Gojo's Younger Brother Mutated

The protagonist of the fanfic of "Spell Return" is named Gojo Che. In the original work, Gojo Satori and Gojo are twins. They were born 30 seconds later and became the younger brother. This started around the first episode of the original plot. There will be no foreshadowing in the previous part. Let's start directly with the main story. The protagonist's abilities will be slowly revealed later.