Hitomi Tsukishiro, a descendant of a clan of witches, lost her color vision at an early age and developed problems expressing her emotions. One day, when she was seventeen, a magic trick by her grandma, Kohaku, sent her back to 2018, 60 years before the time this story began. When Hitomi came back to herself, she found herself in the room of Yuito Aoi, a student of Minamigaoka High School. Hitomi noticed a painting made by Yuito, and for a moment her color vision was restored. Soon she met with her grandma, Kohaku, who was now 60 years younger. As she spent her days at the high school with Yuito, Kohaku, and others, Hitomi discovered some thoughts that were very important.