Hii! I’m not an expert in books, as this is my first time writing one, but I’ve read the first few chapters of your book and to me it seems good, a few vocab mistakes and maybe give a clear summary of what the book exactly is about. It’s all about good first impression, so the cover and description is very important. This is just my opinion, but maybe change the title into: Yuichiro/Muichiro x Reader (oc’s) - Besides each other. If you don’t want to then it’s completely fine, it’s up to you I like it in general though