Rumia in the darkness is a Indie, Strategy, Adventure PC game, developed by Dark Sky Empire, available on Steam and published by Dark Sky Empire.
Rumia, the youkai of darkness, will infiltrate the human village and kill an evil merchant. This man attempts to change all youkai's old names. As a result, youkais will lose their ancient power. Rumia must stop this horrible plan ASAP! She can eat humans for getting new skills.