I get annoyed whenever a possible love interest shows up as well but at least Cha Hae-In isn't annoying and most of all not clingy ٩(๑❛ᴗ❛๑)۶
Plus she's strong and independent, she's actually the strongest in Korea before Jinwoo came along. And she doesn't hold him back at all.
[ SPOOOIIILEEERR ALEEERTRT ]
Even after learning about her feelings, Jinwoo moves on like it didn't even affect him XD what a jerk

I hate when they bring in a female that "falls in love" with the mc, they become so obnoxiously annoying. ( ̄へ ̄)It kills me inside that i can't kill them off, (╯°Д °)╯╧╧because when they appear the mc starts go soft and lose track of he resolution.(〜 ̄△ ̄)〜 sighhhh (╬ ̄皿 ̄)凸