So, as title says...
I only have two "vague" hints. "Vague" as, I'm not 100% sure about whether I'm right about these or not.
The BG: https://www.pixiv.net/member_illust.php?mode=medium&illust_id=47790113
If anything, I think the BG was, something similar to a place like this.
And the "Genre" I would have in mind, according to the search system: Electronic.
(I'm even less sure about considering "Ranked" as a 3rd hint, from my point of view XD)