This is a very comprehensible way to explain how healthy sub and dom dynamics work. Of course the setting of everyone being either a sub or dom by nature helps to tackle the prejudice against kink in a new light. Because they are literally given no choice on the matter, it also works as a metaphor for wanting these things and being convinced they are unnatural and wrong when they feel natural to you. The main character has very harmful misconceptions about what these dynamics entail, mostly due to the kink-shaming he had been exposed to. He is definitely not an inherently kind and accepting person at first and grows a lot throughout the story. The seme is a wonderful dom (definitely more on the pampering side than the punishment one), he is respectful of the uke's boundaries the entire time. Most of the play they engage in is not sexual and as a person who identifies as ace, I loved seeing non-sexual ways of satisfying each other being portrayed as just as valid as others. It is acknowledged that there are multiple levels of play and you can do whatever feels right and safe for you.
In summary, it is an imaginative story with important things to say about safely practicing kink. With a wholesome couple that develops at a slow and natural pace without losing passion. It's not my favorite type of art style though.
Kimi no Ahimoto de Ai wo shiru