When Mai dies in Jujutsu Kaisen, Maki both changes emotionally and powers up in a major way, because their bond as twins and their shared cursed energy is finally severed.

Quick context: Mai’s death

  • Mai dies in chapter 149 after using her Construction technique one last time to forge a special weapon for Maki, fully aware it will cost her life.
  • In their final ā€œheart-to-heartā€ scene, she takes the last of their cursed energy and leaves Maki with a parting wish: to destroy everything holding her back, especially the Zen’in clan.

What happened to Maki at the moment Mai died?

  • Because Maki and Mai are twins, the series establishes they are treated as a single entity in terms of cursed energy and Heavenly Restriction.
  • While Mai lives, Maki’s Heavenly Restriction is incomplete; she has a small amount of cursed energy, which actually weakens the full physical potential she should have had.
  • When Mai dies and takes all the remaining cursed energy with her, that bond is cut, and Maki’s Heavenly Restriction finally ā€œcompletes,ā€ giving her a body comparable to Toji’s: overwhelming physical stats and no cursed energy at all.

Maki after Mai’s death: power-up and rampage

  • Immediately after Mai’s death, Maki wakes up with her new, fully awakened body and absurd speed and strength.
  • Driven by Mai’s final words and years of abuse, Maki proceeds to massacre most of the Zen’in clan, effectively wiping out one of the three major jujutsu families almost single-handedly.
  • This genocide-like retaliation is framed as the ā€œimmediate effectā€ of Mai’s death on both Maki’s character and the larger plot.

Emotionally: guilt, rage, and ā€œfreedomā€

  • Mai’s sacrifice leaves Maki with heavy survivor’s guilt layered over long-standing rage toward the clan that abused them.
  • Some analyses and fan discussions describe Maki as emotionally colder and more detached after this point, almost like a human weapon whose ties to ordinary life were cut along with Mai.
  • At the same time, there is a sense that Mai’s death ā€œfreesā€ Maki from the constraints of both the clan and her own incomplete restriction, letting her finally live up to the potential she always wanted.

How fans talk about ā€œwhat happened to Maki when Mai diedā€

In forums and theory threads, people usually mean a mix of:

  1. Mechanics
    • Maki’s cursed energy is erased when Mai dies, completing her Heavenly Restriction and giving her Toji-level physical abilities.
  1. Story impact
    • Mai’s last words and sacrifice directly trigger Maki’s slaughter of the Zen’in clan, reshaping the jujutsu power structure.
  1. Character reading
    • Some fans see this as a tragic ā€œcharacter sharpening,ā€ turning Maki into a near-emotionless avenger.
 * Others argue she’s not assassinated but pushed to an extreme that fits her history of abuse and her new role as a living weapon.

In short: when Mai died, Maki didn’t just get stronger; she lost her last real family tie, completed her Heavenly Restriction, and stepped onto a darker path as a near-Toji-level human weapon whose first act was to annihilate the Zen’in clan.

Information gathered from public forums or data available on the internet and portrayed here.