I love this manga so much. It's so adorable and has just as much fluff as it does smut, which is always a plus. Mimori and Itsuki are both dorky and there are plenty of comedic moments between the two as well. I think what I find charming about this couple is that they're very ordinary and normal, especially in their daily lives and the way they are with each other.
The start of their relationship is unorthodox and mostly due to Mimori's sexual proclivities involving his mouth being an erogenous zone for him. Mimori's inexperience with being able to experience a normal and healthy relationship due to his complex revolving his mouth has him seeking out Itsuki's companionship. On the other hand, Itsuki, a dentist, finds his interest piqued at Mimori's reactions during a routine check-up and is subsequently attracted to Mimori on a more physical level initially.
As the story progresses, the two learn to love each other for reasons beyond just Mimori's mouth. I find that their relationship is very sweet and passionate, despite their reasons for initially being interested in each other.
In regards to the licensed translations, it does appear to have some minor grammar errors here and there. Using "erected" in places where "erect" should be, and "anal" in places where "anus/ass" should be. Additionally, there is one scene that I believe to be a translation error considering that the scene wouldn't exactly make sense otherwise.
Chapter 12 spoiler about something that happens in chapter 11.
Many readers believe it to be a scene where Itsuki is victim blaming Mimori for getting sexually assaulted in his sleep by Tsuji. During the scene, Itsuki says "Silence gives consent, right?," but it doesn't really make sense considering before that the dialogue was specifically about whether Mimori felt good from his mouth/the kiss with Tsuji when he was touched. Mimori's internal monologue goes on to say that he only felt good because he thought it was Itsuki kissing him in a dream. I believe that this is a potential mistranslation and that Itsuki was perhaps trying to say something along the lines of "Your silence means yes, right?," in regards to him feeling good from the kiss. This is, however, my own opinion and thoughts regarding the scene, since I found it to read a bit strangely considering the context of the scene and what was said.