The author tried to play both the shonen-ai and the hetero romance people...
And that's why it feels half-assed and disappointing. Write Boys Love if you want to, Write Romance if you want to, but do IT CLEARLY, will you?
the character build up is subtle and great ; there's nothing concrete about him, but somehow he comes across as realistic businessman dude going bout his day.
Everything in this city is redundant - that's a great line for a noir protagonist.