For Project S we chose a fantasy setting featuring a new birdlike character named Kasasagi. The game is a 2D flight game which draws inspiration from games such as Ico/Shadow of the Colossus, Monument Valley and Journey. We have created a mysterious atmosphere with the art style, music and ambience and we hope to imbue players with a sense of wonder about Kasasagi, his quest and the world around him.
During gameplay, the player will help Kasasagi to collect crystal shards which they will be able to use to unlock in-game content.
Full announcement: http://playkiseki.com/post/104752032605/announcing-project-s