Responses
It's a really short comic, you should just read it :P
(Totally not saying that because I've already forgotten what chapter and am too lazy to look)
He appears at first in chapter 29 but it's until 31 that he actually speaks and interacts with main guy but, as the comment above said, better read the whole thing, you won't be disappointed<3
May I know the chapter that YuYang from Here U Are had a cameo?