Onii-chan Dakedo Ai Sae Areba Kankeinai yo ne!: Let’s Do It

Akito Himenokoji sighs as Akiko Himenokoji gives him a thumps up while holding a pillow that says Yes on it

After six years of living apart, Akito Himenokoji reunites with his little sister, Akiko, only to learn that she’s developed a complex towards him.
From the anime series Onii-chan Dakedo Ai Sae Areba Kankeinai yo ne! (OniAi)

Flying Witch: Peace and Quiet

Kei Kuramoto and Chinatsu Kuramoto looking at a vast forest

The everyday life of Kei Kuramoto and his little sister, Chinatsu, becomes much more fun and interesting when their second cousin comes to live with them.
From the anime series Flying Witch

Arslan Senki: Battle Ready

Merlane stands with a spear while Alfreed runs in to the room

Merlane and his younger sister, Alfreed, are born of the Zot Clan, a fierce tribe of warriors, and its chieftain was their father.
From the anime series Arslan Senki (The Heroic Legend of Arslan)

The Family Fang: Filming

Baxter Fang holds a camera while he and Annie Fang observe

As adults, Annie Fang and her younger brother, Baxter, are both still trying to come to terms with the fact that their conceptual performance artist parents used them in their controversial, avant-guard work.
From the movie The Family Fang