Time in the game will loop, so the player will end up experiencing the same story repeatedly.

[3] Dunamis15 is set in a world slightly in the future where a nuclear explosion has caused genetic mutations.

Tōgo Takatsuki is leading a boring life at Ceres Academy, located on an isolated island called Dunamis Base.

One day, while rushing to class after having overslept, Tōgo stumbles upon a mysterious girl in the school hallway.

[2] The PSP version includes new features and additional "past and future" episodes of the story.