Also the only thing that made them grow close was the murder issue. Like before that, the seme was totally UNATTRACTED to the uke. Then magically after the incident, he was head over heels.
That kind of progression just isn’t logical but hey im always glad to see yaoi authors tackle different themes.
Time travel can be used to explore historical differences, human psychology, butterfly effect.
Instead of challenging our ideas of there being a single reality, or a best outcome, the story is kind of a tale of wish fulfillment (for the uke), making it feel like a dream and ultimately, weak

But the romance and story doesnt hold up.
Like for their romance to be convincing the author has to PROVE that the uke is a better fit for the seme. Or maybe even introducing a parallel world concept which would make their love story seem less “faulty”. Like you gotta convince me that they are the ENDGAME.
The main issues lies in the fact that eveything is TOO convenient for the uke, and he knows it, which is why hes a nervous wreck. Huge imposter syndrome on his side genuinely sets the relationship up for failure.