Birthday: October 8th
Gender: Male
Age: 15
Eye Color: Blue
Hair Color: White
Occupations: High School Student

Shion Shiunji is one of the youngest siblings, along with his twin sister Minami Shiunji and he is a first-year high school student. He's in relationship with Yuu-chan.

Shion has short white hair and regularly wears a white beanie with two blue stripes along the brim. Attached to the beanie appears to be a large black button with a depiction of the Crux constellation on it. He has large and slightly round blue eyes and long lashes. While in his school uniform, he wears a white hoodie under his blazer.

Seemingly the most laid-back siblings, Shion is mostly shown playing video games on a portable device and/or trying to not get himself involved in complicated situations. Althoug he gives advice to his older brother Arata, when asked, he doesn't seem too bothered to help him without being prompted. In chapter one, he openly admits to only having sex just to see what it feels like. A female classmate, presumably his girlfriend Yuu, is seen wrapped around his arm in the background.

Amongst his siblings, he shows the greatest interest in searching for his birth parents. Upon finding out he was born in Karuizawa, where the Shiunji family has a vacation home, he explored the town to find more information about their whereabouts but was unable to get any leads.

(Source: The Shiunji Family Children Wiki)