Kohaku Tsukishiro

Kohaku Tsukishiro is Hitomi Tsukishiro’s grandmother and the catalyst for the story's time travel. By sending her granddaughter back to 2018, she triggers a journey centered on rediscovering lost connections and forming new friendships. Her decision allows Hitomi to revisit the past and reclaim her fading sense of color, making Kohaku central to the story's emotional arc.