I think a lot of BL fans who read tons of one shots and short stories grow used to fast paced relationships, and that's not what this manga has. Through the course of the first manga and the spinoff, the uke takes time to fall in love and if you read through the comments a lot of readers are saying the story is bad because of his slow development. I for one, thought it was great because it is far more realistic than the usual BL in that sense. Afterall, a build up in stories and relationships always have the better outcome. 10/10, I adored this story.
Mukuchi Na Koi No Tsutaekata