The hero, Yuu Kokonoe, was a boy who was very interested in strange things when he was a child. The heroine, Yuki Amami, as a child, was an expressionless and somewhat absent-minded girl who had no interest in anything. Yuu becomes curious about the expressionless Yuki, decides to make her a target and starts to take care of her. As time passed, Yuu’s act of caring for her changed to loving her, and Yuki, who had never shown any interest in her, expressed her own feelings for Yuu, who expressed his feelings for her, and before long, the relationship between the two changed… As a result of this relationship of 10 years, Yuki has become a girl who becomes dere dere when she thinks of Yuu. “Um… Yuki-san? I think it’s time for you to leave…” “Ya~.” “It can’t be helped… Will you come here, Yuki-san?” “Yes! Gyuu~!” Today’s Yuki-san is also very cute.