Strong Gale, Mad Dragon - Ch. 19

[MangaDex]

 

[MachineGunViperWheels]

For a second there, I thought it was the "friend" from ten years ago who died. However, the names and appearances are too different. The "friend" had brown hair and was named Bang Cheon Woo, while this person has Song in their name.

This means the "friend" will likely appear later in the story.

 

[ceneoss]

So I guess dude's promise to his master to search for his family and bestow his martial arts to his son if he's a martial artist was a mere fart.