According to GameSetWatch, Akira and Ren "were expelled from boarding school after they were caught kissing another student of the same sex. Upon hearing the news, their respective fathers order them to take over the family's parking valet company."
There's more: As players progress through the game's six levels (three of which take place in New York City and three of which take place in Tokyo), they learn more about the protagonists' personal lives.
Sorry, this is the only gay-ish screenshot I could find of this game.
Andrew Littlefield, CEO of Valet Hustle's publisher, Factory Games, recently told mobile-ent.biz that the title's gay content was intended from the start to be more than just a source of titillation.
"We set out to not only create a game that is an absolute blast to play with incredible visuals and top notch audio," he said, "but we also wanted to make a social statement that gays and lesbians should have the same marital rights as heterosexuals."
Watch: Valet Hustle "sizzle reel"