Heeey why the rating is not that high in this but many people read this though?

back in 2018, this was really popular and it's a time where people aren't too picky with the story- Well The backstories are quite long and its kinda complicated too, imo people these days pins for fluffy happy kinda stories and gets offended with almost everything so.
But well, The story is interesting in its own but ending was idk.