This work is a 12-year story of Mana, a woman who cannot accept the death of her best friend, staring at her as she tries to step forward while having deep sorrow.
Mana Kotani was friends with Sumire Utsuki for years. She admired Sumire's freewheeling ways and mysterious charm, but Sumire broke off connections with her. Later, Mana hears of Sumire's death, which she cannot get over.