Guys i need to find this manhwa, this kid gets kidnapped off of the street by an old man w...

Guys i need to find this manhwa, this kid gets kidnapped off of the street by an old man who wants to pass down his martial arts knowledge (idk what its called but something like that) before he passes away. The old man then trains the kid until and he becomes an adult (or teenager) and the old man is talking about how happy he got to teach the kid but the kid is just waiting for the old man to die so he can finally leave.

That’s all i have, i found it on TikTok and i never saw it again. Someone help, I’ve been searching for it since last year.