Good that he does, leave it at that he means. Dazed and listless and unstable as Sans is for now, Gongenzaka does not wish to take even the slightest risk that the skeleton could remember what they say.

And repeat it, for that matter. Gongenzaka is quiet. His head rested upon the ground, mutterings occasionally escaping him still-but then he pauses ('forgive me, but I, the man Gongenzaka, must answer this-')

Gongenzaka turns his head awkwardly again, and stares. "....It is what I, the man Gongenzaka, swore I would, is it not?"

There is a pause-and he adds, "...When a man swears to be there for another...it is an unbreakable oath! ....to claim otherwise... ...to do otherwise," he corrects, "...it would be unforgivable."