BOYS AND MEN Kenkyusei

 (BOYS AND MEN研究生; BOYS AND MEN research students) was a Japanese boy group project known as the "younger brother group" of BOYS AND MEN.

On September 30, 2020 the five final members "graduated" from the group and changed name to BMK.

Former Members

 * Matsuda Kenshiro (松田拳士郎) (Joined September 9, 2013; withdrew 2015)
 * Goto Shiina (五藤椎南) (Joined May 6, 2014; withdrew 2015)
 * Matsuo Takao (松尾崇生) (Joined November 3, 2014; withdrew 2015)
 * Matsuo Seiru (松尾青龍) (Joined December 30, 2013; withdrew September 2016)
 * Kitagawa Setsura (北川せつら) (Joined December 30, 2013; withdraw September 7, 2019)

BMK
Graduated on September 30, 2020
 * Nakahara Sota (中原聡太) (Joined July 11, 2014)
 * Kometani Kyosuke (米谷恭輔) (Joined November 3, 2014) Leader
 * Misumi Kazuki (三隅一輝) (Joined July 20, 2015)
 * Matsuoka Kennosuke (松岡拳紀介) (Joined December 2014)
 * Sato Takumi (佐藤匠) (Joined March 2016)

Matsuri Nine.
Selected as Matsuri Nine. on March 2017.
 * Terasaka Raiga (寺坂頼我) (Joined May 6, 2014) Former leader
 * Nonoda Kanade (野々田奏) (Joined December 30, 2013)
 * Shimizu Takanori (清水天規) (Joined December 27, 2015)
 * Uragami Takuya (浦上拓也) (Joined June 2016)
 * Yokoyama Toy (横山統威) (Joined December 2014)
 * Kanda Rikuto (神田陸人) (Joined Semptember 1, 2013)
 * Takasaki Jukiya (髙崎寿希也) (Joined Semptember 1, 2013)

Best Albums

 * 1) [2020.01.04] BMK the BEST

Singles

 * 1) [2015.06.06] Boys Be Brave 〜1 Man-kai no Yuki〜 (Boys Be Brave 〜1万回の勇気〜)
 * 2) [2015.07.20] SING-ALONG
 * 3) [2016.02.23] Bokutachi no ONE (ボクたちのONE)
 * 4) [2016.06.09] Power Of Dream
 * 5) [2016.07.23] Basshan!!! (バッシャーン!!!)
 * 6) [2016.12.21] Dodonko Don't worry (ドドンコ Don't worry)
 * 7) [2017.08.30] RUN&GUuuuuN!
 * 8) [2017.12.09] Gorigori Savanna Road (ゴリゴリ☆サバンナロード)
 * 9) [2018.05.23] Ai O Ganbatte (愛を頑張って) with Wada Akiko
 * 10) [2018.11.13] Gakeppuchi Junjyo (がけっぷち純情)
 * 11) [2019.06.15] Ei Ya Kkassai (えいやッ喝采)
 * 12) [2020.07.22] BLAZING!!!!!

Digital Singles

 * 1) [2019.11.13] Love and X (ラブエンX)