This manga just went into the dumpster and lit itself on fire, then added accelerant by having Asahi sexually assault Kotaro, and slit its throat by having the ending rushed and confusing as heck.
The lack of arrows pointing at the speaker doesn't make things easier to understand, either.
I'm guessing that Meguru and Asahi might be a couple, and Asahi feels like Meguru's taking too long to propose to her, but I'm honestly less than half certain about that.
I'm also guessing that Meguru expected Kotaro to end up with a woman, while Asahi always expected her to end up with a guy, but that's also only a guess, because everything was so god damn rushed and confusing it's a little difficult to tell what's going on exactly.
As an end-note, was Meguru and Kotaro even a couple? I can't remember that...