Yuta is “trying to kill” Yuji because he officially accepts the role of Yuji’s executioner from the Jujutsu higher‑ups, but it’s actually a calculated act to protect him, not a genuine wish to murder him.

Quick Scoop

  • After the Shibuya Incident, the conservative higher‑ups reinstate Yuji’s death sentence, seeing him as too dangerous as Sukuna’s vessel.
  • To stop other executioners from hunting Yuji, Yuta accepts a binding vow to be Yuji’s official executioner and publicly claims he’ll kill him.
  • In their fight, Yuta really does stab Yuji through the heart to fulfill the vow’s conditions, then immediately uses Reverse Cursed Technique to revive him, effectively faking Yuji’s death for the higher‑ups.

What Yuta Tells The World

From the outside, it looks like:

  • Yuta wants revenge because Sukuna (while in Yuji’s body) massacred people in Shibuya and severely injured his friend Inumaki, giving him a perfect “motive” to hate Yuji.
  • This performance convinces the higher‑ups and other sorcerers that Yuta is loyal to the establishment and serious about eliminating Yuji, so no one questions his pursuit.

What Yuta Is Really Doing

Behind the scenes, the reasons are very different:

  • Gojo asked Yuta (before being sealed) to look after his underclassmen, especially Yuji, if anything ever happened to him, and Yuta treats this as a serious promise.
  • By “killing” Yuji once and reviving him, Yuta satisfies the binding vow, tricks the higher‑ups into thinking the sentence is carried out, and gives Yuji freedom to move without constant execution orders on his head.

Why Yuta Empathizes With Yuji

  • Yuta himself was once sentenced to death for harboring the powerful cursed spirit Rika, so he knows what it’s like to be treated as a monster just for being a vessel.
  • Because of that shared experience, Yuta never truly hates Yuji; his whole “I’ll kill you” act is a cover to keep Yuji alive in a world that wants him gone.

TL;DR: Yuta isn’t truly trying to kill Yuji; he agrees to act as his executioner, “kills” him to fulfill a binding vow, then revives him to protect him from the higher‑ups and honor Gojo’s request.

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