One day, 8-year-old Hiyori, who had lost her parents, and Yui, who was trying to escape her violent father, got off at Kitsunezaki station. The massive earthquake and tsunami altered their fates. Although their lives were spared, they were confused when questioned about their identities at an evacuation center. An elderly woman named Kiwa Yamana came to their aid. From that point on, Yurie went by the name Yui, and Moeka by Hiyori. Together with Kiwa, the three women started a happy shared life in the old seaside house called "Mayoiga".