Randomly putting some new character after chap 0 is just too unpredictably weird. I don't even know anything about the first main character, Mutuki, yet. Even Yuri appearances felt like he is only there to support the talking and storytelling aspect of the story and covered up Mutuki entirely
At first I thought it would be another toxic yaoi like passion but this is just the Opposite!(which is so much better)- and how literally both of them just talking like old couple is so sweet, never hide anything from each other it just a soft, shonen ai vibe kind of thing