Somehow this is quite nice. A slow romance (indeed, hasn't even really started) where the characters feel a lot more real (and imperfect) than typical shoujo fare, though we're still firmly in shoujo-land.
The gaming aspects feel genuine, too.
...Actually, now that I've read some I wonder if the lvl 999 is supposed to be the difficulty rating of the prospective romance, rather than the intensity (as the current English translation of the title would have implied).