Name: Kazunaru Tanaka Date of Birth: Estimated July 7th–8th, 1975 Place of Birth: Kashiwa City, Chiba Prefecture Nickname: Naru Occupation: CEO and Manager of the entertainment agency "T-gene" Known as the eldest brother of former KAT-TUN member Koki Tanaka and SixTONES member Juri Tanaka. The eldest of five brothers.

Koki Tanaka Date of Birth: November 5, 1985 Age: Around 20 Place of Birth: Kashiwa City Blood Type: B Height: Approx. 170cm Affiliation: KAT-TUN Role: Rap, Vocals Nickname: Koki. His speech is frank and masculine. He treats people more like "comrades" than following senior-junior hierarchies. As a rapper, his language has a bit of a street vibe. He has a strong, rebellious image. However, in reality, he is said to be family-oriented and caring. Good-looking.

Juri Tanaka Date of Birth: June 15, 1995 Place of Birth: Kashiwa City Blood Type: B Height: Approx. 175cm Group: SixTONES Member Color: Blue Role: Rap, Vocals Nickname: Juri, Juttan. He has high conversational skills and is often assigned the MC role. Quick-witted and good at witty retorts. Caring and deeply trusted by his members. He looks cool at first glance but is actually very friendly. The type to cherish family and friends. Good-looking.

Hyoga Tanaka Date of Birth: June 21, 1991 Place of Birth: Kashiwa City Blood Type: B Height: 180cm Occupation: Actor, Singer, Stage Actor, Screenwriter, Director Affiliation: t-gene.com Nickname: Hyottan. Good at acting spoiled. Friendly. Cheerful. Values his friends. Strong love for his family.

Date of Birth: July 14, 1999 Place of Birth: Kashiwa City Height: Approx. 174cm Blood Type: Not disclosed Occupation: Actor, former baseball player Family: Youngest of five brothers Eldest: Kazunaru Tanaka Second: Koki Tanaka Third: Hyoga Tanaka Fourth: Juri Tanaka. Friendly. Good at acting spoiled. Cheerful. Honest. Strong love for his family. An influencer who often films family Vlogs and posts them on TikTok.

The mother of the Tanaka family. High-spirited, used to be a gal (and still is). Scary when angered. A presence that is genuinely terrifying to defy.

The father of the Tanaka family. Surprisingly clumsy and a bit of a klutz.