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Midori moves from Tokyo to Sendai and starts high school with hopes for a fresh daily life. After she defends her childhood friend A-chan from bullying, she draws the hostility of Elena, the class's hidden leader. The bullying turns toward Midori and pushes her to a desperate end before she is given another chance at the same days. In her second attempt, she tries to protect A-chan while keeping Elena from noticing her actions. The early conflict centers on whether Midori will seek revenge or choose another way forward.