i'm confused what exactly happened between them at the end of high school. like did sunwoo...

i'm confused what exactly happened between them at the end of high school. like did sunwoo just suddenly stop talking to haejin one day after he discovered he plagiarized haejin's work? and how exactly did he get haejin's idea in the first place??

and now in present day, does haejin know sunwoo plagiarized his work for the contest back then?? i feel like the author tried to make some scenes too poetic and artistic and didn't explain it clearly. honestly maybe i'm dumb but i need these things said clearly or i don't get it lmao