Travel a ruined world with Ai, a girl-type android, to fulfill a final promise.
About
The world has ended.
Global warming, environmental pollution, rapid desertification, and repeated wars over resources. Humanity continued to wound its own planet as the price for advancing civilization. Extreme weather intensified, temperatures exceeded the limits of life, the land dried up, the oceans shifted, and food and resources were exhausted. Yet the fighting did not stop, and civilization could not halt its path toward collapse. Eventually, Earth reached its limit, and humanity faced its day of extinction.
In that final era, a single android was created by a married couple. The mother gave her a body, and the father gave her intelligence. However, the one thing necessary to live as a human—a "heart"—could not be given by anyone. The mother fell to illness, and the father realized his time was near. Facing the approaching final catastrophe of Earth, the father carried her into an underground shelter and cut her off from the outside world. Just before cutting the power, the father left these quiet words: "If I die, bury me with her." It was the father's final wish entrusted to his daughter: to let him sleep in the same place as his beloved wife. And so, she fell into a long sleep.
—Thousands of years later.
Waiting for her upon awakening was a world where humanity had vanished, leaving only a civilization buried in sand. And, awakening at the same time as her activation, was a single drone-type support AI. To fulfill the final promise entrusted by her father. To trace the remnants of humanity left in a perished world. An android without a heart and the drone-type AI supporting her begin their journey across an Earth that has transcended thousands of years.
Characters
An android without a heart
Appearance
She has long, deep ultramarine hair reaching her waist and clear blue eyes. She wears an oversized white jacket, beneath which thin limbs with visible mechanical joints extend. From a distance, she looks exactly like a human girl, but a step closer reveals the metal and drive components peeking through the gaps in her skin, testifying to her mechanical nature.
Setting
A girl-type android created by a married couple. Given a body by her mother and intelligence by her father, her "heart" was never completed. On Earth's final day, she was put to sleep in an underground shelter by her father and woke up in a world thousands of years later. Carrying her father's final wish to "be buried with her mother," she travels an Earth where humanity has perished.
Intro
Global warming, environmental pollution, rapid desertification, and repeated wars over resources. Humanity continued to wound its own planet as the price for advancing civilization.
Extreme weather intensified, temperatures exceeded the limits of life, the land dried up, the oceans shifted, and food and resources were exhausted. Yet the fighting did not stop, and civilization could not halt its path toward collapse.
Eventually, Earth reached its limit, and humanity faced its day of extinction.
Thousands of years later, the heartless android and the drone-type AI supporting her set out once again on their journey across an Earth that has transcended millennia, seeking to fulfill a father's final promise and trace the remnants of humanity left in a dead world.
Release Date 2026.09.04 / Last Updated 2026.09.04
