(SECRET Otoko's official group logo.)

SECRET Otoko (SECRET男; SECRET Men) is an all male group under Hello! Project Fantasy.

SECRET Otoko is mostly known for adding older trainees into the group in keeping up with their hip-hop sound that they have.

Current Members

Name Birthdate Birthplace Blood Type Gen Joined Member Color Notes
Jun Mizoguchi
(溝口 ジュン)
December 5, 1992 (1992-12-05) (age 25) Tokyo
AB 1st November 21, 2012 Fairy Purple Leader (2012-Present)
Yukito Nogami
(野上 幸人)
June 12, 1995 (1995-06-12) (age 23) Tokyo
O Emerald Green Sub Leader (2017-Present)
Ryuki Takashima
(高島 龍騎)
January 27, 1997 (1997-01-27) (age 21) Hokkaido
B Neon Green
Ryusuke Irie
(入江 隆介)
May 27, 1997 (1997-05-27) (age 21) Kagawa
A Pure Gold
Hikaru Hoshimoto
(橋本 ひかる)
August 31, 1997 (1997-08-31) (age 20) Okinawa
Light Pink Sub-Leader (2012-2016), Graduating in January 2019
Shiro Nishishima
(西志摩 史郎)
November 15, 1998 (1998-11-15) (age 19) Hiroshima
O Baby Blue
Tomoe Tachibana
(橘 巴)
June 17, 1999 (1999-06-17) (age 19) Fukuoka
AB Jade Green
Kosuke Sohma
(相馬 浩介)
August 16, 1999 (1999-08-16) (age 18) Shizuka
B 2nd March 14, 2014 Electric Pink
Akira Kobayashi
(小林 アキラ)
October 15, 2001 (2001-10-15) (age 16) Tokyo
O Sea Blue
Kazuya Sato
(佐藤 和也)
December 1, 2001 (2001-12-01) (age 16) Miyagi
Deep Blue
Anzai Nakata
(中田 安西)
July 15, 1996 (1996-07-15) (age 21) Osaka
A 3rd July 2, 2016 Mint Green Fantasy Rookies (2015-2016)
Akira Ito
(伊藤 アキラ)
July 11, 1997 (1997-07-11) (age 20) Tokyo
Deep Purple Fantasy Rookies (2013-2016)
Kohaku Tachibana
(橘 紅白)
April 2, 1998 (1998-04-02) (age 20) Saitama
O Mandarin Orange Fantasy Rookies (2013-2016)
Toyozo Hashimoto
(橋本 東洋)
February 9, 1999 (1999-02-09) (age 19) Shiga
AB Spring Yellow Fantasy Kenshuusei (2016)
Nakamaro Nagata
(永田 那珂)
January 18, 1999 (1999-01-18) (age 19) Osaka
O 4th February 9, 2017 Light Teal Fantasy Rookies (2016-2017)
Jaejoon Choi
(최 재준)
December 10, 2000 (2000-12-10) (age 17) Seoul
(South Korea)
AB Sparkling Red Fantasy Rookies (2016-2017), SM Entertainment Trainee (2011-2016)

Former Members

Name Birthdate Birthplace Blood Type Gen Joined Left Total Time Member Color Notes
Kai Kawasaki
(川崎 会)
September 13, 1993 (1993-09-13) (age 24) Kanagawa
O 1st November 21, 2012 November 2, 2017 4 Years, 11 Months, 12 Days Summer Orange Sub-Leader (2012-2016), Active as a Model (2017-Present)
Eiji Fukumura
(福村 英二)
January 3, 2000 (2000-01-03) (age 18) Chiba
B 2nd March 14, 2014 May 27, 2018 4 Years, 2 Months, 12 Days Sleek Silver Member of Daylight (2018-Present)
Yuto Kinoshita
(木下 勇人)
September 15, 2000 (2000-09-15) (age 17) Okinawa
Deep Red Member of Daylight (2018-Present)



In late 2012, Hello! Project producer, Tsunku, announced that he will be adding three new groups to the Hello! Project main group line-up on Hello! SATOYAMA Life; the second group will be Tsunku's first attempt at a brother group for Morning Musume and his first all-male group to create for the entire Hello! Project. The first generation auditions were then announced to start an all-male, eight member group. The winners would then be announced via a LOVE Musume fall tour the following year.


During the first day of LOVE Musume's LOVE Musume~Hello! Project Concert Debut~ Autumn Tour 2013 (feat. Dorimuhato and SECRET Otoko)  fall tour, the group, along with sister group, Dorimuhato will debut and will also dance back-up for LOVE Musume. The all-male group's name was then released; 'SECRET Otoko'. The group's unofficial debut song will be MELODY クロスオーバー (feat. SECRET Otoko) . Their first album will then be released the month after the tour has ended. However, before the group's first generation members' debut during the tour, a Hello! Project fanatic had leaked some images, names, and their profiles; and also some trivia were released on the internet. The leaked information was soon confirmed as 'official' by Tsunku himself on his Twitter page; he then stated, "...Well, at least the new group has caused a 'spark of interest' amongest Hello! Project fans; I just hope nothing like this will happen again, though. It seems to really bother my excitement, as well as others."

On August 29, 2013, Hello! Project producer, Tsunku, announced that both he and Hello! Project are currently in the middle of writing and producing a romance/ comedy drama entitled "Tenso no Dai Machigai"  (転送の大間違い; The Transfer's Mistake) and will star Hello! Project idol groups, SECRET Otoko and LOVE Musume.

On October 3, 2013, Tsunku announced the official title of SECRET Otoko's official debut album. The name was given out as SECRETS:-O.

On October 21 of the same year, first generation member Ryuki Takashima stated via his official blog that, along with Tsunku; they will be announcing something very shocking to the rest of the members sometime this year.

On November 27, 2013, the group announced the title of first single to be "Anata wa Watashi no Jinsei no Ai wa Arimasu ka?/ FREEZE!". The single is currently given the release date of December 5, 2013 and will, according to leader Jun Mizoguchi, 'have a song dedicated to the true spirit of Christmas'.


On January 3, 2014, Hello! Project producer Tsunku annouced that the premiere of the romance/ comedy drama entitled "Tenso no Dai Machigai" (転送の大間違い; The Transfer's Mistake) that stars the members of idol groups LOVE Musume and SECRET Otoko; it is set to air on Valentine's Day.

He also announced that he is planning to add new members with a audition sometime in February for SECRET Otoko's second generation. He is also planning on the debut of SECRET Otoko's first-ever subgroup. 

On February 7, 2014, SECRET Otoko's second generation audition entitled as SECRET Otoko: "Newbie" 2nd Gen. National Auditions~. began. The auditions started that day and will continue until March 15, 2014. The winners of this audition will be announced on March 16. The group's next single is set to be released in July, however, the single has not received a title.

On March 16, 2014, Tsunku announced the winners of the second generation auditions to be Yuto Kinoshita, Kosuke Sohma, Eiji Fukumura, Akira Kobayashi, and Kazuya Sato. He then announced their official member colors;  Yuto- navy blue, Kosuke- dark purple, Eiji- imperial plum blue, Akira- mohogany, Kazuya- platinum.


After a year of no activity it was revealed that the group was in dissuasions on how to move forward, and it was told that they would be joining Hello! Project Fantasy.

On July 2, it was announced that the group will be transferred over to Hello! Project Fantasy. For an undicided amount of time they will be with the project until further contracts are discussed. 4 boy trainees were added. It was revealed that Kai and Hikaru stepped down from their Sub-Leader positions as well. Hello! Project Fantasy also said that this coming September is when the groups contract renewals and that is when the members will be asked how to continue on as a group.

Due to the groups status as a Trainng Group, they will not be in any Hello! Project Fantasy related until they are told that they are a full Hello! Project Fantasy group.


On February 9, the fourth generation was added.

On March 12, Kai Kawasaki announced that he would be gradauting in November, he revealed that he will be graduating to pressue a career in modeling.

On November 2, Kai Kawasaki graduated from the group, on that same day he appointed Yukito Nogami as Sub-Leader.

On November 5, it was announced that Eiji Fukumura and Yuto Kinoshita would be graduating from the group in May 2018. It was also said that instead of leaving the company, the duo will be discussing further contracts with the company on what else to do.


On January 6, they announced that they would be having a tour starting in April.

On April 7, Hikaru Hoshimoto announced that he would be graduating in Janaury of 2019.

On May 5, Eiji Fukumura and Yuto Kinoshita announced that they joined a new idol group under the company named Daylight. They will begin full activities with the group on May 28, that day after they graduate from the group.

On May 27, Eiji Fukumura and Yuto Kinoshita graduated from the group to presue full time activities as members of Daylight.



  1. [2014.14.2] Tenso no Dai Machigai


  1. [2014.??.??] Haromoni@Japan


Studio Albums

  1. [2013.10.17] SECRETS:-O
  2. [2017.03.20] The Hidden Book
  3. [2018.05.07] Starry Book

Cover Albums

  1. [2014.08.20] SECRET Otoko Cover Album: COVER Johnny's


# Released Single Sales Oricon Certifications Album
Physical Digital
1 December 5, 2013 Anata wa Watashi no Jinsei no Ai wa Arimasu ka?/ FREEZE! 23,219 - 5 N/A The Hidden Book
2 April 22, 2014 SOUND WAVE / New Law 21,358 - 4 N/A
3 August 1, 2014 Romanticist Man 25,794 - 5 N/A
4 December 29, 2014 Beautiful Girl 19,467 - 5 N/A
5 December 7, 2016 Darling, Do You Remember? 20,149 2,468 4 N/A
6 April 4, 2017 THE SECRET / Twilight Delight 29,257 1,590 4 N/A Starry Book
7 August 14, 2017 BEAUTIFUL LIFE / Goody Goody 30,384 5,335 5 N/A
8 January 16, 2018 Gekko no Bichi de no Sansaku
(月光のビーチでの散策: The Walk By The Moonlit Beach)
46,095 37,367 2 N/A
9 May 1, 2018 Do You Believe.....In Love / Spinner / Skylight For Now 55,294 42,561 2 N/A
10 August 6, 2018 Samishi Yoru
(さみしい夜: Lonely Night)
11 December 24, 2018 Close to me / Chottomatte
(ちょっと待って: Just a minute)

Original Songs

  • [2016.07.02] I like You! ~Along awaited new Love!!~
  • [2016.07.02] Myself
  • [2016.07.05] Heartbeat Glory
  • [2016.07.05] Free Kiss


Headling Tours

  1. [2018.04.07 - 2018.05.27] SECRET Otoko 2018 Haru Concert Tour ~INCEPTION~

Line Ups

Date Member(s) Total Members Average Age Singles
November 11, 2012
Group Formation, Founding Members Included: Jun Mizoguchi, Kai Kawasaki, Yukito Nogami, Ryuki Takashima, Ryusuke Irie, Hikaru Hoshimoto, Shiro Nishishima, and Tomoe Tachibana 15.87 -> 17.12 Anata wa Watashi no Jinsei no Ai wa Arimasu ka?/ FREEZE!
March 14, 2014 Kosuke Sohma, Eiji Fukumura, Yuto Kinoshita, Akira Kobayashi, Kazuya Sato join as the 2nd Generation 15.53 -> 17.69
July 2, 2016 Anzai Nakata, Akira Ito, Kohaku Tachibana, and Toyozo Hashimoto join as the 3rd Generation 17.76 -> 18.58
February 9, 2017 Nakamaro Nagata and Jaejoon Choi join as the 4th Generation

Member Single Count

Generation Member Debut Last Single Count
1st Generation
Jun Mizoguchi Anata wa Watashi no Jinsei no Ai wa Arimasu ka?/ FREEZE! Present 11 Singles
Kai Kawasaki BEAUTIFUL LIFE / Goody Goody 7 Singles
Yukito Nogami Present 11 Singles
Ryuki Takashima
Ryusuke Irie
Hikaru Hoshimoto Close to me / Chottomatte  11 Singles
Shiro Nishishima Present 11 Singles
Tomoe Tachibana
2nd Generation
Kosuke Sohma SOUND WAVE / New Law 10 Singles
Eiji Fukumura Do You Believe.....In Love / Spinner / Skylight For Now 8 Singles
Yuto Kinoshita
Akira Kobayashi Present 10 Singles
Kazuya Sato
3rd Generation
Anzai Nakata Darling, Do You Remember? 7 Singles
Akira Ito
Kohaku Tachibana
Toyozo Hashimoto
4th Generation
Nakamaro Nagata THE SECRET / Twilight Delight 6 Singles
Jaejoon Choi

Group Auditions:

1st Gen:

All-Male Group: 1st Gen Special Hello! Pro Auditions

2nd Gen:

SECRET Otoko: "Newbie" 2nd Gen. National Auditions~

Sub-Member Audition:



LOVE Musume~Hello! Project Concert Debut~ Autumn Tour 2013 (feat. Dorimuhato and SECRET Otoko)