Your source for brother and sister love
Wilfrid Kijima and his younger sister, Shia, are both students at Gunpla Academy. He leads its battle team, Celestial Sphere, which has won several national championships in a row, and she is an exceptional Gunpla builder.
From the anime series Gundam Build Fighters Try
Takaki Uno met Aston Altland while working at Tekkadan, a private security company, and both he and his little sister, Fuka, became good friends with him.
From the anime series Kidou Senshi Gundam: Tekketsu no Orphans (Mobile Suit Gundam: Iron-Blooded Orphans)
Homi Moegi is a bubbly girl who has no qualms pillowing her little brother’s head on her lap. He, as a young teenage boy, however, is embarrassed by such close physical contact with her.
From the anime series Miru Tights
The elf Cayna adopted three children. Skargo, an elf, became a respected high priest who is overzealous in showing affection for his mother. His elven younger sister, Mai-Mai, became the headmistress of the Royal Academy, but she often gets into fights with Skargo. Their youngest brother Kartatz, a dwarf, became a master craftsman. He also has the calmest demeanor of his siblings.
From the anime series Leadale no Daichi nite (In the Land of Leadale)
The loud and violent Prometheus fights with a scythe while his sister, the quieter but equally dangerous Pandora, uses a staff. Together, they seek to awaken Model W for their own nefarious purposes.
From the videogame Mega Man ZX
Shin Natsume and his youngest sister, Aya, inherited their family’s powerful ability to synchronize their ki with all things, though using it can be risky. Maya, the other sister, doesn’t appear to possess any such great powers, however.
From the anime series Tenjho Tenge
Reinhardt and his younger sister, Olwen, are both mage knights who serve the duchy of Friege. Over the course of the war, they find themselves on opposing sides of the conflict but still love and respect one another.
From the video game Fire Emblem: Thracia 776
Ray is a kindhearted and selfless boy who cares greatly about the sea, his little stepsister, Mia, and his island home.
From the anime series Sango no Umi to Ouji (The Prince and the Coral Sea)
On the island of Sardinia, Antonio “Tottoi” Cipriano goes out and has adventures, which makes his little sister, Francesca, jealous and want to come with him.
From the anime movie Tottoi (The Secret of the Seal)
Shinji Koganei is an all-around player on his high school basketball team. He’s a backbencher, but even so, his older sister, Akane, always encourages him to keep playing.
From the anime series Kuroko no Basket (Kuroko’s Basketball)
Sister/Brother Complex 