Ryuukyuu Timeline 2: Tedako no Machi Tanbou  

Ryukyu Timeline 2: Searching for the City of the Tedako, 琉球タイムライン2 -てだこのまち探訪-

A historical fantasy that unfolds a mysterious story between a high-school girls – Akari, Sarah and Tsubasa – and Satto, the king of the Ryukyu Kingdom.(Source: AniDB)