Hakwonmul
Complete | sunbo,soonbo | 2014 released
Good till around chapter 45. After that, the manhwa blurs junho and minoh's relationship completely and instead fills the book with side characters "drama", junoh starts acting weird and distancing himself from minoh, and you keep reading because you don't understand what's going on with all the cliffhanger that made no sense, but there's nothing to understand it's just meaningless fillers coupled with a bunch of irrational and unwanted closeness between junoh and pretty much everyone else (esp chang hyun) and misunderstandings that are not cleared up for the sake of the plot (translation: lack of plot)
Endou-kun No Kansetsu Nikki