Kira Yamaguchi

Kira Yamaguchi is a Japanese singer, dancer, and actress, best known as a main dancer and vocalist of the girl group Girls² under LDH Japan and Sony Music Associated Records. Since debuting in 2019, she has been a central figure in the group, known for her energetic stage presence and precise dance skills. As of 2026, she continues to perform with Girls², release music, and appear regularly on the TV Tokyo children's program Oha Suta as part of the sub-unit Oha Girl from Girls². Her official color within the group is yellow, and her MBTI personality type is ENFJ. [edit]

Kira Yamaguchi grew up in Nagasaki Prefecture as the eldest of three children. She had a pet hamster as a child and enjoyed playing with small children, dancing, shopping, and watching movies. Her favorite foods are pizza, pasta, and meat.

During her second year of middle school, she joined EXPG Fukuoka, an LDH-affiliated training school for dance and performance. While training at EXPG LAB, she became a member of KIZZY, a pre-debut dance group for female trainees under 14. In 2018, she participated in LDH's The Girls Audition under the Actress Category. During the audition process, renowned director Takashi Miike confirmed that the winner would receive a role in one of his works. Kira won the audition and was cast as a main role in Miike's tokusatsu superheroine series Secret × Warrior Phantomirage!. [edit]

Kira debuted in 2019 as Asumi Saki in Secret × Warrior Phantomirage! on TV Tokyo, part of the Girls × Heroine series. Through the show, she became a member of the idol unit mirage². On June 26, 2019, Girls² officially debuted as a supergroup combining members from mirage², magical², and miracle² with the single Daijoubu. Kira was one of three mirage² members to join Girls².

In 2021, Girls² released the album GaruGaku. Complete Best. That same year, Kira became part of the sub-unit Oha Girl from Girls², a regular segment on Oha Suta. She continued group activities through tours, TV appearances, and variety shows. Fellow mirage² member Ran Ishii graduated from Girls² on March 31, 2023, and Toa Harada graduated on August 31, 2025, leaving Girls² as a seven-member group. As of 2026, Kira remains active with Girls², performing and releasing new music. [edit]

Kira is portrayed in media as a bright, energetic performer with strong dance skills. Her content tone is youthful and positive, consistent with the children's entertainment and idol genres she works in. Girls² does not have an official fandom name. Her social media voice on Instagram is cheerful and fan-engaged, typical of Japanese idol social media presence. She does not have a documented signature aesthetic beyond her group's colorful, youthful concepts. [edit]

Kira Yamaguchi holds no global ranking placement within the current iFANN dataset, as fame metrics for this individual have not yet been collected or evaluated. The absence of a specific ordinal position reflects a gap in the data rather than a lack of public presence. While her professional activities span major commercial campaigns and television appearances, the aggregate signals required to generate a definitive world rank remain unmeasured at this time.

Regarding her audience, no official fandom name exists specifically for Kira Yamaguchi. Although Girls² maintains an official fan club structure through LDH, the collective base does not utilize a unique moniker distinct from the group's general supporters. Fans engage with her primarily through standard idol channels, including her official Instagram account where she shares personal insights on food and photography, and via formal letter submission forms hosted by her agency. There are no documented rituals, organized birthday campaigns, or charity drives exclusively dedicated to her that distinguish her individual following from the broader group dynamic. Her interactions remain consistent with typical industry practices, focusing on direct engagement through social media and official fan letters without the emergence of specialized folklore or large-scale fan-led events.[edit]

Kira Yamaguchi serves as the dance leader of Girls² and previously held the title of oldest member and leader for the sub-unit mirage2 before its reconfiguration. Before her major debut, she trained with the EXPG LAB pre-debut dance group known as KIZZY. She secured her place in the industry by winning LDH's The Girls Audition in 2018, a victory that guaranteed her a role in a production directed by Takashi Miike. Her official color within Girls² is yellow, a shade that matches her energetic stage persona. On a personal level, she enjoys playing with small children and watching movies, and she once owned a pet hamster during her childhood. Her younger sister, Ririka Kayamoto, is also active in the entertainment industry. Recent professional shifts have solidified her reputation as a key performer. Following the departure of Ran Ishii, Kira was highlighted as the 'new Ace' of Girls², taking on increased spotlight for the group. In April 2026, she participated in the release of a dance practice video for the song 'TIP TOP' alongside their new EP 'Melty Love'. Her media portfolio expanded significantly between 2024 and 2026, featuring roles in web commercials for UHA Mikakuto's 'CORORO' candy in May and November 2024, as well as vertical short dramas including 'Itsu Datte Kyuukyoku no Sentaku' in June 2025 and '#5151' streamed on TikTok in July 2025. She also participated in WEGO's 'MY FIRST' project in early 2025 and appeared in the EVRIS Autumn Web Magazine later that year.[edit]

Kira is the eldest of three children. She has a younger sister, Ririka Kayamoto, who is also active in the entertainment industry. Details about her parents and other siblings are not publicly documented. She grew up in Nagasaki Prefecture. [edit]

Kira is associated with fellow Girls² members including leader Misaki Tsuruya, Youka Ogawa, Minami Hishida, and others. She worked with director Takashi Miike on Secret × Warrior Phantomirage!. Her younger sister Ririka Kayamoto is also in the entertainment industry. [edit]

As of 2026, Kira Yamaguchi has no confirmed public romantic relationships. She is currently single. Japanese idol culture typically discourages public dating disclosures, and Kira has maintained a private personal life. No relationships have been documented in credible sources. [edit]

No publicly available net worth estimates exist for Kira Yamaguchi from credible financial sources. As a member of Girls² under LDH Japan and Sony Music, her income derives from group activities including music sales, concert tours, television appearances on Oha Suta and variety shows, acting roles, and merchandise sales. Without specific financial disclosures, no reliable net worth figure can be reported. [edit]