I still don't see how is he even considered an "asshole", he's much more decent than the so called childhood bff and the sister lol. And from this chapter we could say that Dajeong got a crush on sunbae but was never reciprocate lol, serves her right(▰˘◡˘▰)
lets say blondie is indeed an asshole
NOW the sister wanna play the good girl and try to protect dahae? lmao