I think it's more in the vein of we need a love rival and the first one that comes that isn't that weird would be either childhood friend or an old classmate of his/her. Also, usually, these type of stories suffer of the 1st girl syndrome so...
lmao I am wondering how long this series gonna last. Hope it's forever like Nozoki Ana or that S Cupid one. Then again, those two had a bit more substance, methinks.
Ugh, I do wonder if Im Dal has some dark stuff on publishers, dude just drops series left and right and he still gets a job. lol
Anyway, the art downgrade is a shame but I guess it's common practice with Korean stuff nowadays (MLS, DM, etc.).