Pretending????
Probably, but there must be more to it.....
Ig pretending to be his friend, I'll give you some spoiler,,,,,,,,
In the next chapter Hajun will ask the blondie Yunjae whether he is his childhood friend or not but blondie says he doesn't know. Hajun met blondie after Yunjae leaves him and takes a picture with him and they end up meeting in high school in which at that time, Hajun was the only friend blondie had,,,,so is pretending because he is afraid he might lose the friendship
Ohhh I see thanks
That's just my assumption, I didnt fully understood the raws so
Ohhhkkkk
Then what about Blondie? ?????