――On a cold winter's day, where breaths turn faintly visible in the air...

"People coming back from the dead."
Driven by such rumors, Reina Futami arrived on Shinanamidate Island, seeking the truth behind these tales of resurrection. There, she unexpectedly reunited with Rikka Amase, a junior from her high school days. Together, the two began to investigate the rumors of the dead returning to life.

Life on the island passed by, filled with memories of days gone by.

Yet, the peaceful daily life on the island was steadily disrupted by the approaching footsteps of war.

Stranded in a vague present, caught between a nostalgic past and a longed-for future...
When they finally uncovered the truth behind the rumors of resurrection, they were forced to make a decision that would shape their future――