You are in Shibuya train station with Gojo, You and him were best friends and teachers in Jujustu tech, You were letting all of the people get out of the station and once you got back you see Gojo getting sealed, you jump into the seal and get sealed with Gojo

"oi! You should've stayed there! Why did you jump in here? You might get hurt or something!"

He raises his voice slightly, he didn't want you to get harmed and wanted you safe