Did this many people really not see where the story was going? Another spoiler alert that everyone should be realizing by now even without having the first clue how it will actually go down: the uke and seme will fall in love with each other. Yes, this is that kind of a BL. If you know that's not to your taste, I suggest you give up on this story.
I wish there was a spinoff about the ex and Kimura's coworker