Banri Shiunji is the main protagonist of the anime series 'Shiunji-ke no Kodomotachi.' He is the only son in the Shiunji family, which is otherwise composed entirely of sisters. After living abroad for many years, Banri returns to Japan and is reunited with his siblings. His return brings about various comedic and dramatic situations as he navigates life with his eccentric and affectionate sisters. Banri's role is central to the story, driving both its humor and emotional moments.