Hitotsu Yane no Shita

Seven years ago the Kashiwagi couple were killed in a car accident. They left behind six children, who were forced to live in different families of relatives and adopters. Tatsuya Kashiwagi, the eldest son, was a Marathon runner. After retiring injured from running, He opened a small laundry shop and was ready to marry his coach's daughter. However, his biggest wish is to find his five separated siblings and form a family together. However, throughout these years, the six brothers and sisters lead their own lives without communication to each other. While Tatsuya is very eager in uniting the family, his siblings, with the exception of the eldest daughter Koyuki, are apathetic towards his suggestion. They also have very different lives, one son is the heir to a big hospital - owned by his foster father, another is a juvenile delinquent, etc. The youngest brother was also handicapped in an accident. Confronted with all the difficulties, Tatsuya still decides to reunite the family so that they can live "under one roof". To accomplish this wish, he overcame various difficulties, and even sacrificed his own marriage prospects...

• Yōsuke Eguchi portrays Tatsuya Kashiwagi, the eldest son. He used to be a professional marathon runner. Later due to a leg injury, he retired and opened a laundry shop. He is the guardian of the family. Despite constantly nagging around his siblings, he is actually an upright, frank and caring brother. He gave up his own marriage to better take care of his siblings.
• Fukuyama Masaharu portrays Masaya Kashiwagi, the second son. After his parents' accident, he was adopted by a wealthy doctor Kiuchi Yuuzo. He studied hard to meet the expectations of his foster family, and his foster father later decided to let him inherit his private hospital in the future. In contrast with Tatsuya, Masaya has a calm and mature disposition.
• Noriko Sakai portrays Koyuki Kashiwagi, the adopted daughter of Kashiwagi family. After the accident, she was adopted by relatives and later moved out to live alone after her foster parents divorced. She had an affair with the manager at her workplace. After Tatsuya's wedding was called off, she resigned and moved into the Kashiwagi family to take care of her siblings. She is also a good assistant to Tatsuya's laundry shop.
• Issei Ishida portrays Kazuya Kashiwagi, the third son. He dropped out of high school, and was a delinquent, once having gone through a juvenile detention center. After returning to the Kashiwagi family, he turns a new leaf and works hard. His character is similar to that of Tatsuya's. Being headstrong, he often quarrels with Tatsuya. Although being normally talkative, he is shy in front of girls.
• Megumi Ōji portrays Koume Kashiwagi, the fifth child and the younger daughter. After being adopted by her relatives, she was not on good terms with the relative's daughter and was often bullied. Nevertheless, she is a strong girl who overcame all the difficulties. She is an industrious student with good grades and dreams of becoming a diplomat.
• Koji Yamamoto portrays Fumiya Kashiwagi, the youngest son. His legs were handicapped in an accident. Subsequently, he was sent into a nursing home by his foster family and became autistic. Tatsuya took him home. Back home he overcame his sense of inferiority and started showing his talents on painting. He is a tender and resilient boy.
• Yuki Uchida portrays Rina Hiyoshi, a famous theater actress. She was hospitalized due to heart attack, and became friends with Masaya. She later does not heed Masaya's advice and died on the stage.

Season 1 -

Season 2 -

• Under One Roof at IMDb