is a Japanese manga series written and illustrated by Reiji Miyajima. It has been serialized in Hakusensha's manga magazine Young Animal since February 2022. Set in Tokyo's Seijà  neighborhood, located in Setagaya Ward, the series follows a young boy who has never had a girlfriend. He lives with five sisters and a younger brother until his father reveals that he and his siblings are not biologically related.
An anime television series adaptation produced by Doga Kobo aired from April to June 2025.
Arata Shiunji is a young man who lives with his five sisters and a younger brother. Due to him never having a girlfriend, it appears he will still remain single for the foreseeable future. One day, however, his father reveals a shocking secret to the family: he and his siblings are not blood relatives. Arata now finds himself dealing with an unexpected situation thanks to this revelation.
Written and illustrated by Reiji Miyajima, The Shiunji Family Children started in Hakusensha's manga magazine Young Animal on February 25, 2022. Hakusensha has collected its chapters into individual volumes. The first volume was released on July 15, 2022. As of February 27, 2026, nine volumes have been released.
The manga has been licensed for English release in North America by Yen Press.
In February 2024, it was announced that the series would receive an anime television series adaptation. It was produced by Doga Kobo and directed by Ryouki Kamitsubo, with series composition by , and character designs and chief animation direction by Miki Muto. The music was composed by Akki, , and . While the first two episodes had an advanced screening at the United Cinemas Toyosu in Tokyo on March 16, 2025, the series aired from April 8 to June 24, 2025, on AT-X and other networks. The opening theme song is , performed by Nacherry, while the ending theme song is "Like You o(>< = ><)o Love You?", performed by the "Shiunji Family Children" group (composed of Chika Anzai, Marika KÃ Âno, Rie Takahashi, Hana Hishikawa and Kana Ichinose as their respective characters).
Crunchyroll is streaming the series. Medialink licensed the series in Southeast Asia and Oceania (except Australia and New Zealand) for streaming on Ani-One Asia's YouTube channel.