Seven Days of a Daddy and a Daughter (Japanese: パパとムスメの７日間, Hepburn: Papa to Musume no Nanokakan) is a Japanese television drama series that was broadcast on TBS from 2007.^[6] The series is based on a novel by Takahisa Igarashi^[7] in 2006. The South Korean comedy film Daddy You, Daughter Me directed by Kim Hyeong-hyeop in 2017 was based on this series.^[8]

Kyōichirō Kawahara (Hiroshi Tachi), a deputy director of public relations at a top cosmetic company, leads a project called "Rainbow Dream," aimed at young consumers. His daughter, Koume (Yui Aragaki), is a second-year student at Sakura Taipei High School and has a strained relationship with her father. During a family trip, a train accident causes them to swap bodies for seven days. How will they each navigate life as a middle-aged salaryman and a teenage high schooler?

• Kyōichirō Kawahara played by Hiroshi Tachi
  • A salaryman working as the deputy director of public relations at Bisei Cosmetic.
• Koume Kawahara played by Yui Aragaki
  • A second year student at Sakura Taipei High School and Kyōichirō's daughter.

• Reiko Kawahara played by Yumi Asō
  • Kyōichirō's wife and Koume's mother.
• Hisoka Kunieda played by Sumie Sasaki
  • Reiko's mother and Koume's grandmother who lives in the mountains of Chiba.
• Toshiko Kunieda played by Tatsuki Kasu
  • Reiko's Sister and Koume's Aunt.

• Kosuke Nakajima played by Norito Yashima
  • Kyōichirō's superior at work.
• Kazuko Nishino played by Mayumi Sada
  • A member of the new product development project team, she likes Kyōichirō.
• Koichi Maeda played by Kenji Kaneko
  • A member of the new product development project team. He used to be in the sales department.
• Wataru Mifune played by Yūji Miyashita
  • A member of the new product development project team who likes to gossip.
• Kanako Shīna played by Imai Rika
  • A member of the new product development project team, she came into the group because she is the daughter of a major department's president.
• Hisako Itsaki played by Chie Īnuma
  • A member of the new product development project team, originally from the accounting department.
• Takeshi Watanabe played by Tōru Emori
  • 4th generation Chairman of Bisei cosmetics.

• Oosugi Kenta (Ken) played by Shigeaki Kato
  • A high school third-year student in the football club. Koume has feelings for him.
• Ritsuko Nakayama played by Ayaka Morita
  • Koume's classmate, and childhood best friend.
• Hirata Saori played by Natsuko Oki
  • Koume's friend.
• Mr. Morozumi
  • Koume's Teacher.

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