is a Japanese actress and former singer. In 2000, Kago debuted as a 4th generation member of the idol girl group Morning Musume. During her time in the group, she was also part of Mini-Moni and other Hello! Project sub-groups. In 2004, Kago departed from Morning Musume and became part of the duo W with Nozomi Tsuji. In 2006, Kago was suspended from her agency for underage smoking and subsequently dismissed in 2007, forcing her to leave W and Hello! Project. In 2008, she returned to entertainment as an actress, appearing in Kung Fu Chefs (2009), Ju-On: Black Ghost (2009), and Battle of Demons (2009). In 2009, Kago returned to music as well, releasing her debut solo single, "No Hesitation" (2009), followed by her jazz album, Ai Kago Meets Jazz (2010). She also formed her own girl group, Girls Beat!!, in 2013, of which she remained a member until 2016. Career 2000–2004: Morning Musume and Mini-Moni At age 12, Kago won the 4th National Audition of Morning Musume held by the Up-Front Works in 2000. On April 15, she, along with Rika Ishikawa, Hitomi Yoshizawa, and Nozomi Tsuji, were inducted into the idol group Morning Musume as its fourth generation. Their recording debut was in the group's ninth single "Happy Summer Wedding". Kago and Tsuji's addition to the group received positive critical response. With an increasing fan base, they, along with Morning Musume member Mari Yaguchi and Coconuts Musume member Mika Todd, formed a new subgroup named Mini-Moni. In addition to this, Kago was also admitted into established subgroup Tanpopo as a second generation member. From 2001 to 2004 Kago participated in the annual Hello! Project shuffle units (3-nin Matsuri in 2001, Happy 7 in 2002, Salt5 in 2003, and H.P. All Stars in 2004). 2004–2007: W In August 2004, Kago and Tsuji graduated from Morning Musume together after Minimoni began their indefinite hiatus. Under the arrangement of their agency, Kago and Tsuji formed a new pop duo, W, releasing two albums and six singles together. Before the release of their seventh single and their third album, W3: Faithful, on February 9, 2006, Friday published photos showing Kago smoking. She was 15 at the time the photos were taken. The following day, her agency issued a press statement saying that she and W's activities had been suspended "indefinitely." Kago spent the remainder of the year under house arrest at her