A collection of additional materials including a new adventure story "Sentimental season". The heroine dates a boy, but the relationship in the pair of her school friend Mami develops much more intensively and the heroine does not want to lag behind.

A collection of additional materials including a new adventure story "Sentimental season". The heroine dates a boy, but the relationship in the pair of her school friend Mami develops much more intensively and the heroine does not want to lag behind.