Generic romance anime ruined by an even more generic incest subplot.
It's like AI-generated background music in anime form. There's almost nothing new or interesting here. It's an anime that has been made countless times before (and will probably be made countless times again). At least Bunny Girl Senpai had some interesting supernatural elements to it.
Average animes can be enjoyable from time to time. Not every anime has to be a new, ground-breaking masterpiece. Sometimes, it's okay to just be cookie-cutter time-sink to enjoy.
However, Alya-san is so generic it's almost offensive.
Your time and attention would be better off elsewhere.