Kakuchou Shoujo-kei Trinary is a mobile RPG developed by Gust and Toei Animation. Released in 2017, it blends real-time battles with an interactive narrative that unfolds through live-updated anime episodes and character communication features. Players assist five girls fighting digital threats known as "Phenomenon" while forming bonds through daily conversations and decisions. The game was part of a multimedia project and ran until August 31, 2018.

In a near-future Japan, five ordinary girls are chosen to fight against mysterious digital threats known as "Phantoms" that invade reality from cyberspace. Using advanced technology, they transform into "Trinarys" and battle these anomalies, while also confronting their own personal struggles and secrets. The story blends science fiction, drama, and the emotional growth of the heroines as they work together to protect both the real and digital worlds.