Nagatoro's genres are: Ecchi, Comedy, Romance, Slice of life.
Let's jump to the divisive reason.
Characters:
One of the most widespread criticisms of the anime are the characters and Nagatoro's bullying of the MC (Naoto). I understand this position, and it is a very sensitive subject, but I do not completely agree.
Naoto reacts passively to Nagatoro's teasing; Nagatoro often annoys him, and it happened a few times that she crossed the line and the joke went too far. Naoto's excessive unresponsiveness (which is also shown to us when we discover that he has been bullied by his schoolmates since childhood) and Nagatoro's bossy behavior - especially in the first few episodes - makes them characters whose flaws are exasperated and for this reason it is easy to take them into dislike. The two of them are far from being perfect but this doesn't mean bad writing, on the contrary it makes them more real; it is impossible to not have any flaws and to react perfectly to every situation. Their actions are wrong for several reasons; they are not justifiable. But they are understandable. Both are wrong in the way they communicate and initially fail to understand each other. In fact it's worth noting that the jokes become increasingly softer as the romantic subtext becomes more clear.
So I agree on the initial unfairness of their behavior, but to me this doesn't negatively affect the anime in any way: it actually makes the characters and their relationships more believable, and it gives room for their improvement, because it's interesting to see how their relationship evolves over the course of the story. Speaking of which, I was pleasantly surprised to notice the subtle evolution between the two protagonists that keeps the anime fresh and varied. We can read between the lines the romantic subtext that progressively changes the way the two relate to each other and that gives each reciprocal action an unspoken second end. Furthermore, their behavior gradually softens and becomes sweeter.
Some people don't like Naoto.
Why is it difficult to interface with him? Although he has several of a boy's problems, many despise him.
Maybe because he shows us a part of ourselves, the one we don't like. But the reaction of these people is believable: the reason of their reaction is the realism of the story and the plausibility of the characters.
It's curious how they didn't animate the faces of the extras, and how they almost-solely showed the story characters in the external scenes as if they were the only ones to exist. There are those who interpret it as a way to save on the budget which is plausible, but in my opinion the anime shows us how the characters of the story see the world around them and consider other people, as if they lived in a bubble where it's only their life that matters and all those who aren't part of it or have no relevance to the plot, have no sense of existing or do not deserve the effort to be represented.
I really liked the animations, especially the colors and the way they are combined. The opening is very catchy both for the song and for the colorful drawings. The secondary characters do not have the same depth as the main ones but they perform the effective function of comic relief. The pacing isn neither slow nor fast, but it's moderate enough to keep you intrigued.
In conclusion Nagatoro is a light comedy with a pleasant romantic subtext that is entertaining but will not fail to move you!
