A quick update from Etou for all the NicoNico Super Conference 3 goers (which is this weekend)! By playing the exhibiting Taiko cabinets at Hakurei Shrine Reitaisai Super Concentrated Version area, you can receive a free Reitaisai x Taiko no Tatsujin collaboration coaster, looking just like the above image! Be quick though, as stock is limited!
Read more about the mini-Reitaisai at Super Conference 3 here, or the real Reitaisai on May 11 here!
Link to the original tweet