The countdown on Square-Enix’s recently opened “Densetsu” teaser website has concluded, revealing a crossover between Japan-only PS1 racing RPG Racing Lagoon and smartphone game Shissou, Yankee Damashii.

Details as of now remain extremely scarce, even as to what the nature of the collaboration will entail. Aside from Racing Lagoon scenario director Motomu Toriyama reprising his role, the website only mentions the following two Engrish-laden things:

The legend of the fastest racer in Yokohama moves from southern Yokohama to Yandama (Japanese shorthand for Shissou, Yankee Damashii.)

Yankee soul… Our funky game… In this age of awakening… what’s hot right now is… our flick and swipe.

Based on this information, 4Gamer suspects that Racing Lagoon-related expansion content is coming to Shissou, Yankee Damashii, but admits that it’s otherwise only an educated guess. As Famitsu came up with the obtusely specific connection to Racing Lagoon when the teaser site first went live, it’s also possible the Japanese media just isn’t letting on as much as it actually knows about the nature of this new crossover.

Shissou, Yankee Damashii, for those who don’t know, is a Yankee-themed (“yankee” being a Japanese term for pompadour-sporting male high school punks and the like) mobile game published earlier this year for Android by Square Enix, with an iPhone version coming later.

As Dengeki describes in its article, “In Shissou, Yankee Damashii, players band together online with a group of lively yankees and forge bonds with them. Alongside friends from across the globe, players hop on their motorcycles and fight off other yankees in thrilling battles. The game also has an outrageous storyline whose developments are one of its main charms. Beyond that, players can also customize how their avatar and motorcycle look.”

Thanks, 4Gamer and Dengeki.