On April 4, 2009, Tsunku announced on his blog that a new group consisting of Hello! Pro Egg members would be formed. He later revealed that the members would be Ayaka Wada, Yuuka Maeda and Kanon Fukuda, all formerly of Shugo Chara Egg!, as well as fellow Egg Saki Ogawa, and announced that Ayaka would be the leader. A month later, on May 7, 2009, he revealed the group's name to be "S/mileage"; the name is a portmanteau of the English words "smile," "mileage," and "age," and together the name means "the age of smiles."

As of December 2014, the group name has been renamed to ANGERME.

Current members:

- Wada Ayaka (leader) (和田彩花)

Birthday: August 1, 1994

Years active: 2009-present

- Nakanishi Kana (sub-leader) (中西香菜)

Birthday: June 4, 1997

Years active: 2011–present

- Takeuchi Akari (sub-leader) (竹内朱莉)

Birthday: November 23, 1997

Years active: 2011–present

- Katsuta Rina (勝田里奈)

Birthday: April 6, 1998

Years active: 2011–present

- Murota Mizuki (室田瑞希)

Birthday: June 12,1998

Years active: 2014-present

- Aikawa Maho (相川茉穂)

Birthday: March 26, 1999

Years active: 2014-present

Currently on hiatus. (Started on January 11, 2017)

- Sasaki Rikako (佐々木莉佳子)

Birthday: May 28, 2001

Years active: 2014-present

- Kamikokuryou Moe (上國料萌衣)

Birthday: October 24, 1999

Years active: 2015-present

- Kasahara Momona (笠原桃奈)

Birthday: October 22, 2003

Years active: 2016-present

- Funaki Musubu (船木結)

Birthday: May 10, 2002

Years active: 2017-present

Also a member of Country Girls.

- Kawamura Ayano (川村文乃)

Birthday: July 7, 1999

Years active: 2017-present

Former members:

- Maeda Yuuka (前田憂佳)

Birthday: December 28, 1994

Years active: 2009–2011

- Ogawa Saki (小川紗季)

Birthday: November 18, 1996

Years Active 2009–2011

- Kosuga Fuyuka (小数賀芙由香)

Birthday: November 19, 1997

Years active: 2011

- Fukuda Kanon (福田花音)

Birthday: March 12, 1995

Years active: 2009–2015

- Tamura Meimi (田村芽実)

Birthday: October 30, 1998

Years active: 2011–2016