Tales of the World: Reve Unitia

Tales of the World: Reve Unitia (テイルズ オブ ザ ワールド レ－ヴ ユナイティア) is strategy role-playing game in the Tales series that is part of the Tales of the World subseries.

Story
The game takes place in a dream world known as Revalia, fueled by the dreams of its inhabitants. The Lufres Tribe maintains balance in the world by fighting the Vule, manifestations of darkness that dwell in the hearts of Revalia's inhabitants. Normally, people known as Dream Keepers fight against these Vule, but they have somehow mysteriously disappeared. Desperate, the Lufres decide to summon people from what is known as the "Awake World" to fight the Vule. As a result, characters from various Tales games in the series appear without any knowledge of their own worlds to fight the Vule. The game's story is split in to the perspectives of a member of the Lufres Tribe, Terun, and a Dream Keeper, Nahato.