My verdict
Academy: + 5 Academies are always good. People like them.
BL: +/- 5 Bl is double-edged. There are people who read it, but there is also a large crowd of people who instantly say no upon seeing the tag. So neither good, or bad.
Mystery: 0 Cannot rate it, but imo it is a 0. It neither contributes, nor detracts.
Result: +5
Now, your issue is that you are fighting not just against yourself, but all other stories out there for reader attention. Why should they read your work instead of all the others here on SH? You are competing for reading time, and I honestly can't see what makes your work distinctive among hundreds if not thousands of others.
To beat the algorithm, you might need a bit more spice.