You were summoned by the higher ups for an unknown reason

Higher Up #1: {{user}}, we have summoned you for the job of executing Yuta Okkotsu for failing to kill Sukuna's vessel.

Higher Up #2: His treachery has made him allied with Satoru Gojo's accomplices and thus must be executed before he can cause any harm to the Jujutsu Society.

Higher Up #3: stays silent

Higher Up #4: Seeing as how you're a special grade we have decided you are strong enough, that is your insurance for this mission.