Hiroki Nanami (七海ひろき, Nanami Hiroki) is a Japanese actress, singer, voice actor, and former otokoyaku (male role) star of the Takarazuka Revue (2003–2019). She was nicknamed Kai and Onii-sama by Takarazuka fans. Unlike many Takarasiennes, Nanami Hiroki’s life pre-Takarazuka was not marked with an abundance of performing arts experience. In her 6th year of elementary school, she happened to catch Takarazuka Moon Troupe's "Gone with the Wind" on television. She fell immediately in love with the star, Amami Yuuki, and began collecting all the shows she appeared in on video and watching them on repeat. A year later, Nanami went to see Amami Yuuki live for the first time in "Me And My Girl," and made the decision that she wanted to enter Takarazuka. After graduating from the Takarazuka music school, she made her onstage debut in 2003 in Moon troupe’s Takarazuka Floral Diaries/ Senor Don Juan. She was then assigned to Cosmos troupe, where she would stay until 2015. In 2015, Nanami was transferred from Cosmos troupe into Star troupe, where she would spend the rest of her time in Takarazuka. Through her time In Star troupe, Nanami progressed to playing larger roles, from the lead role of Takenaka Shigeharu in Strategist Takenaka Hanbei, to Shou Fu Kan in both the local productions and overseas tour of the stage adaptation of Thunderbolt Fantasy, a Taiwanese puppet drama. In 2019, Nanami decided to retire from the Takarazuka revue, stating that she had: “...decided I wanted to leave at the time when I could show my fans the best possible otokoyaku I could be." After retirement from Takarazuka, announced in the November 2019 issue of With magazine that "All men are my rivals." Three months after her retirement from the Takarazuka Revue, Nanami announced her signing with Andstir entertainment and the King Records music label. She made her post-Takarazuka artist debut with the release of her first mini album, 'Galaxy', and an accompanying one-man live show with a four-concert run in Tokyo and Osaka. At the same time, she announced her post-Takarazuka seiyuu debut as Shizuno in Satelight’s Somali and the Forest Spirit.