For a week and a half this December, Sega will be hosting a mini-Granrodeo cafe at their Namba Sennichimae location. A selection of drinks and merchandise from the Akihabara location will be available. Each drink purchase will come with a random coaster.
Event: Cafe Stand Namba
Venue: Sega Namba Sennichimae, 4th floor
Source: Sega web site