BOYMEN AREA KENKYUSEI

BOYMEN AREA KENKYUSEI (ボイメンエリア研究生; Boymen Area Research Students) or BAK is a general term for groups formed in various parts of Japan as a regional version group of BOYS AND MEN Kenkyusei. They're divided in four areas: Nagoya, Tokyo, Osaka and Fukuoka.

Boymen Babies is a group consisting of elementary and junior high school students. Although they're considered to be one of the area research students it's rare they work jointly with other areas.

In February 2023, it was announced that the 12 1st Generation member will graduate. On May 17th, 2023 the 1st generation graduated and will be active as a new group, Colorful Diamond, on the next day.

The group is now composted by its 2nd Generation.

Members
The 2nd Generation was announced on May 15, 2023. It consists of 7 members.
 * Yanagawa Shouma (柳川翔真) (Joined 2020 as Babies)
 * Tanaka Riku (田中碧) (Joined 2019 as Babies)
 * Minami Maede (前田南) (Founding member of Babies)
 * Keijiro Seki (関敬次郎)
 * Kaneko Joshua (金子ジョシュア)
 * Tsuge Manato (柘植愛斗) (Candidate)
 * Yoshida Ibuki (吉田伊吹) (Candidate)

Nagoya Kenkyusei (BNK)
Area color was. Formed on November 19, 2017.
 * Izuo Shinkei (泉尾心慶) (left April 2020)
 * Ozeki Fuuma (尾関楓茉) (left April 2020)
 * Kato Aito (加藤愛斗)
 * Shinogaya Ayumu (篠ヶ谷歩夢)
 * Suzuki Masamune (鈴木政宗)
 * Hashimoto Takeru (橋本岳龍) (withdrew August 2019)
 * Nakamura Koki (中村皇紀)
 * Nagura Ryo (名倉凌)
 * Furukawa Rui (古川流唯; ) (Founding member; graduated May 17, 2023)
 * Ishida Yuya (石田侑也; ) (Joined December 29, 2019; graduated May 17, 2023)
 * Kato Sora (加藤青空; ) (Joined December 29, 2019; graduated May 17, 2023)
 * Tanaka Towa (田中永遠; ) (Founding member; graduated May 17, 2023)

Tokyo Kenkyusei (BTK)
Area color was. Formed on December 7, 2017.
 * Kato Kakeru (加藤翔)
 * Kato Fuki (加藤楓季)
 * Kitade Ryusei (北出流星)
 * Kojima Mitsunori (小島光理)
 * Taguchi Keiya (田口馨也) (Founding member; withdrew early 2019)
 * Narita Michiyuki (成田道行)
 * Fujii Kai (藤井魁)
 * Hisakado Taiki (久門大起) (withdrew September 2020)
 * Yujin (結神) (Joined spring 2020; withdrew January 2021)
 * Nakajo Nozomi (中条望) (Joined December 29, 2019; graduated September 20, 2021)
 * Takagaki Hiroyuki (高垣博之; ) (Founding member; graduated May 17, 2023)
 * Kunimura Ryoga (國村諒河; ) (Joined February 1, 2018); graduated May 17, 2023)
 * Seki Yuki (関優樹; ) (Joined December 29, 2019; graduated May 17, 2023)
 * Setsura Kuken (設楽賢; ) (Joined December 29, 2019; graduated May 17, 2023)

Osaka Kenkyusei (BOK)
Area color was. Formed on November 23, 2017.
 * Ueda Reon (上田怜苑)
 * Okata Rin (大片凜)
 * Oka Masaki (岡真暉)
 * Kazaoka Yui (風岡佑飛)
 * Saeki Ryu (佐伯龍)
 * Murakami Naoya (村上直哉)
 * Tatsuno Mikio (辰野幹生)
 * Murakami Naoya (村上直哉)
 * Naito Taiyo (内藤大耀) (Joined March 21, 2018; graduated April 12, 2021 )
 * Takahashi Makaha (髙橋真佳把) (Founding member; graduated March 31, 2022)
 * Utsumi Taichi (内海太一; ) (Founding member; graduated May 17, 2023)
 * Oka Yamato (岡大和; ) (Founding member; graduated May 17, 2023)
 * Nakashita Yuki (中下雄貴; ) (Joined February 2020; graduated May 17, 2023)

Fukuoka Kenkyusei (BFK)
Area color was. Formed on November 11, 2017.
 * Eto Ibuki (衛藤伊吹)
 * Oishi Ikkei (大石一慶)
 * Kabashima Saya (樺嶋颯也)
 * Saeki Takahiko (佐伯孝彦)
 * Taguchi Kyoya (田口恭也)
 * Takemoto Yusuke (武本悠佑) (left in 2019)
 * Hanai Yuki (花井優樹)
 * Yoshida Reiya (吉田玲哉)
 * Kotsuji Iori (小辻庵; ) (Founding member; graduated May 17, 2023)

Boymen Babies (BBS)
Formed on December 15, 2017. Inactive since September 2022.
 * Omagari Sorato (大曲空翔) (Founding member)
 * Maeda Hiro (前田日彩) (Founding member)

Albums

 * 1) [2021.04.29] Colorful Diamond (カラフルダイヤモンド)

Singles

 * 1) [2020.05.10] Muteki no One Way Road (無敵のOne Way Road)
 * 2) [2020.12.23] GULLIVER BEAT (ガリバ→BEAT!)
 * 3) [2021.12.22] GO! GO! Treasure Road!! (GO!GO! トレジャーロード!!)
 * 4) [2022.07.13] BURNING DANCE (BURNING DANCE -バニダン-)
 * 5) [2022.12.27] Sleeping Beauty

Other Singles

 * [2022.08.26] MATSURIBANA (祭花) with Terasaka Raiga

Units
Kirakira★Senbatsutai (キラキラ★選抜) Former Members
 * Yujin
 * Takahashi Makaha
 * Furukawa Rui
 * Utsumi Taichi
 * Ishida Yuya
 * Kotsuji Iori
 * Nakashita Yuki

Singles
 * [2020.07.18] Shall We Kiss?