The title doesn’t interest me because it just doesn’t sound like a story I’d read. It sounds bland and it’s a really common title. Also, you should properly capitalize titles (same goes for your chapter titles). In this case, you write ‘My Handsome Neighbor’, capitalizing the beginning of each word.

Your description has faulty grammar, and if I was just a normal reader and not a reviewer, I would definitely not click on the next button because I wouldn’t want to read because I wouldn’t want to find out.

Original: The (1)door next to (2)eunji's has always been empty. (3) Eunji was never been hugged by any boy ( except her friends) nor being kissed. (4)Until one day. That one day changed Eunji's life. She's never been the same. From a lonely girl to a busy girl. What happened that day? Read to find out.

1 – I suggest you write house/room/apartment instead of ‘door’. And I get that you used a figure of speech to represent the house/apartment but I feel like if you use any of the above-mentioned words, it’ll sound more natural and more coherent.
2 – You should capitalize proper nouns.
3 – Faulty grammar. I suggest you write: “Eunji has never been hugged or kissed by a boy.”
4 – This is where it gets glaringly obvious, the fact that you jumped from one thought to another throughout this whole paragraph. You also made sentences out of fragments (incomplete thoughts) and that’s just a bad decision. You also said to read your fic to know what happened that day but everything was hinted in the description: Someone moved in to the house next to Eunji’s and it so happened that they kissed or hugged and the story goes from there.

The font style and size are okay. They don’t disturb the readability.

The main character lives alone and tells the readers her thoughts about living alone. The empty, neighboring apartment is also introduced through the MC’s thoughts. The next day, a new student arrives and consequently, said student happens to be living in the room next to the main character’s. But after that, nothing happens yet.

Honestly, I feel like you haven’t shown enough of the plot for me to write a sensible review on it. There weren’t developments yet, which is understandable considering the flow of the story. You used three (very short) chapters to introduce the story and I’m not sure how it will progress.

I don’t think there were enough details. I felt blind reading the story. If I didn’t know any of the idols you used in your fic, I wouldn’t have known how the characters looked like. Make sure to show put enough details to guide your readers through the story. Details are important, but it’s also important that you don’t go overboard with them, and I’ve seen people put too many details because they were compensating. Don’t be that person.

The flow was slow for me. The chapters were too short. I feel you could have enclosed everything you wrote in the three chapters into one.
I hated how you switch the point of views every so often. That doesn’t help in establishing a constant flow. Please stick to just one.

I didn’t at all enjoy the story. I don’t like this kind of genre in the first place, but there are stories with this genre that I do find enjoyable. The bad grammar and the flow were the main reasons why.

I’m sorry if I was harsh. I also acknowledge that I could have told you in a kinder way but I felt it was urgent that I let you know in the way I chose. Anyway, I hope this only inspires you to study harder. I didn’t mean for it to let you down. Just take it as criticism.

Thank you for choosing our review shop. Please don’t forget to credit us in your foreword and comment after you received your review! I’m sorry it took a long time.