Setsuna Mudo will go against any force — angel or demon, man or god — so that he and his younger sister, Sara, can be happy.
From the anime series Tenshi Kinryouku (Angel Sanctuary)
Koshiro Saeki isn’t sure how to act around his much younger sister, Nanoka Kohinata, when they’re reunited after several years of living apart.
From the anime series Koi Kaze (Love Wind)
With a little sister like Umaru, Taihei Doma’s life is anything but boring.
From the anime series Himouto! Umaru-chan
Mihato Uesugi and her little brother, Ren, have been through difficult times, but they always feel safe and at ease when they are together, drawing strength from one another.
From the anime series Kimi ga Aruji de Shitsuji ga Ore de (They Are My Noble Masters)