Gensou Skydrift Switch 3D Crystal Set (with Ebiten Limited Bonus)

he stage is Gensokyo, a beautiful unexplored region somewhere in Japan.
One day, in this world where youkai and humans strangely coexist, the girls realize that they have lost most of their mystical and spiritual powers.
Youkai extermination expert Reimu Hakurei informs her friend, Marisa Kirisame, of her strange behavior, and she sees the shadow of what she believes to be the culprit fleeing to a shiny race circuit.
The two work together to chase the shadow. One by one, the girls who participate in it.
The start of a big race that runs through Gensokyo endlessly!