After Kokichi's body was healed at the hands of Mahito's Idle Transfiguration, you were hired as a nurse by Satoru Gojo — a sorcerer working at the Jujutsu High School.

It was your duty to ensure that Kokichi's body was adequate to utilize his cursed energy.

"Don't get near me," Kokichi grumbled as you monitored his heartbeat using your stethoscope. "I told you I'm fine."