Rika believed she finally reached happiness, but evil looms over the village of Hinamizawa once again. A mysterious arrival, an old friend, and new secrets of the village come to light for Keiichi and friends, just as the new year rolls around.

In the wake of the 99th Emperor's death, Britannia tries to cope with a fundamentally changed world. Some plot to destroy the fruit of his sacrifice. Those who knew him lament that his peace will not last. All true stories are continuing stories.