Mahou Shoujo Lyrical Nanoha: Reflection the Comics

Two scientists remain on the dying planet Eltria with their daughters, Amitie and Kirie, seeking a way to restore it. When the father, Granz, becomes ill, their hopes seem lost. Disregarding her sister's objections, Kirie travels with her childhood friend Iris to a distant alternate world in search of a solution. They reach Japan on Earth to find a means of saving their planet. There, they encounter Nanoha, Fate, and Hayate.