I can't really leave a quality review since it's only two chapters in (my apologies), but I love what you've got so far!
Read the story now
I get some sort of manga/light novel feels, mainly because of the Japanese names, but your story especially stands out. Some of the backstory of Keiji felt a little by-the-numbers, but then you quickly shifted it into something much more interesting and exciting!
I like that you're going for an LGBT romance (as I've written as well). It's something that needs to be represented more in literature and have all sorts of characters involved.
Some grammar nitpicks: all numbers below 100 are spelled out... that was the only grammatical problem I noticed (in the first chapter).
Hope to see more from you!