This is purely based on my opinion, I don't claim to be an expert critic or anything just your average day to day weaboo. The list is in no particular order, enjoyyy :)))
Ahhhhh my favourite romance anime at the moment. I've rewatched this wayyy too many times for my own good. EVERY character in the anime is unique and have their own appeal which is very entertaining. The anime becomes more and more interesting as the anime progresses with very little to no scenes that make you feel bored. The anime has a somewhat of a generic plot but it executes everything it wants to convey PERFECTLY. The art of the anime isn't breathtaking or anything but it still manages to capture the watchers immediately. The whole anime is just a masterpiece. I LOVE IT.
(Rika might be the main reason why this anime is my favourite romance anime out of the rest... best girl.)