Arc 1A Brother's Sacrifice
Xia Xia built his strength through repeated simulations, defeated Hajime Kashimo, and entered a new simulation as Yuji Itadori’s twin brother. After uncovering Kenjaku’s plan and preparing to use his cursed technique, Xia Xia killed Kenjaku and his family to stop Sukuna’s return, leaving Yuji to find the bodies.
- Xia Xia died repeatedly while learning to defeat Izumino and the Snake-Fish Cursed Spirit, earning rewards that strengthened him.
- Xia Xia lived as Amabuki Xia Xia, trained under Isshin, and avenged him by killing Hajime Kashimo with a cursed blade forged from Isshin’s remains.
- Xia Xia improved through repeated fights with Kashimo, forged Kashimo’s corpse into Raikiri, and persuaded Kashimo to add a rule allowing players to enter and leave colonies freely.
- Xia Xia met Yuji Itadori and Choso, but Sukuna took over Yuji and killed him, sending Xia Xia back to the Pure White Space.
- Xia Xia chose Yuji as his next core character and was born as Yuji’s twin brother, raised by Kenjaku and Jin Itadori.
- Xia Xia discovered Sukuna’s Finger inside Yuji and awakened a technique that let him uncover information and glimpse fate, then secretly prepared to stop Sukuna’s return.
- Xia Xia studied Kenjaku’s history and plans while growing close to Yuji, and resolved that his brother must survive even if Xia Xia had to sacrifice himself.
- After completing the knowledge needed to use his technique against Kenjaku, Xia Xia killed Kenjaku, Jin, and Wasuke, and Yuji returned home to find them dead.