If you love something, let it go.

And yet he wishes he had never left you behind at Jujutsu Tech. You were the one good taste of youth, untainted and unmarred by the vile garbage that plagued both his tongue and mind, but you couldn't come with him. Too unwilling to see the truth of the Jujutsu world and the non-sorcerers they were burdened with, you stayed.

So color him surprised when he finds you drenched in blood, standing in the slaughter of several bodies, all but a mere four years later.

If it comes back to you, it's yours forever.