This drama is mostly inspired from the song "goodbye grief aka 2521" I really wish I had seen it earlier cause that most importantly destroyed the hopes of any happy ending , even after watching the first ep My inner gut told me 'dont get yourself hurt' but against my better judgement I continued it and I don't regret watching till 13 th episode even 14 but the last 2 episodes DID THEM DIRTY , from 18 to 21 the Naheedo and Baekyijin stood by eachother without even a word for months fell apart because of basically an almost stupid reason no reason.

The couple which provided hope to thousands of others took away everything in last 2 episodes because of what "time drifted apart trope" when they were so in love ,heck even in present she still seemed in love so what was the point of a breakup when the sole reason was to just say nothing last forever but when it could have lasted if they spoke it out ,if it was any other couple I would not have bothered much but their whole base of their relationship was built upon communication,
what the line again in the finale again ,OH YEAH .

"we love only during happy times and burden during sad times"- when I was watching I was basically bawling my eyes out but then when I thought back it was RIDICULOUS -

THEY BOTH WERE LITERALLY AT ROCK BOTTOM WHEN THEY MET and they helped ,supported grown together and how in the WORLD did they become burden in hard times ,

and KIM MIN CHAE - they basically created a present which was useless since they didn't explain a single fucking thing and on top of being a sad ending they gave an open ending ,

nevertheless,I cried and I am still crying -I cant listen to any melody songs(when we were young-Adele ) or the ost either I keep remembering 18 yr old naheedo and 21 yr baek yi jin

one more, they had more life in 18-22,19-23,20-24- THAN "2521 phase which was literally 20 mins as a whole which sucked on every aspect".

all the people who tell the ending is beautiful - they say that because of the editing - cuz they included the best past moments showing us "how far they have come just to loose everything"

exceptional acting by eyeryone -

everyone got their own happy endings(including the second lead couple who did long distance for 6 year straight meeting only twice a year )- so THE BREAK UP OUR MAIN LEAD WAS USLESS.

for most part of epsiode 16 either they were crying or we were crying -honestly it was exhausting to watch -they gave this hope of them being together till the last minute and that is what that made a HUGE DISSAPOINTMENT.

I don't know for whom I am crying ,Baekyijin or Naheedo or the lost emotions which the carved it from the first episode
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For all the people who wanna watch -end it in ep 13 or 14 and directly go to ep 16 to end -save yourself from disappointment or heartbreak .