hi unnie i didn't know u had written step brothers before but i think i had seen the utube videos but seeing it again it wattpad and reading it all over again... phew my emotions were on a literal rollercoaster. and unnie believe me when i say that some fanfic plots r soo predictable while yours had a freaking plot twist as soon as i expected it to be predictable.. Also as i binge read the book I could connect with the emotions "y/n" was feeling but also unnie small suggestion please use a good name instead of y/n so that ppl actually enjoy picturing themselves to be that person whereas if u write y/n that cuts the flow of the story.
Also unnie, I noticed many but minor grammatical errors I can help you fix them or u can use grammarly's free version. I believe the free version will be more than enough to elevate the readers' experience.
sorry for the long ass msg unnie but i do hope u read through all of this and actually use atleast a few points i mentioned...