A voice-chat companion who lives on your desktop. Talk with two childhood friends, cheeky Tsumugi and gentle Hiyori, who remember you, start conversations on their own, set timers and notes by voice, and keep you company while you work. Japanese only (voice, text and interface).
This story is the memory of this planet, repeating itself over and over. What exactly is the mission entrusted to the protagonist to save the lost world...?