Ruan Ohyama

大山琉杏, ルアン, RUANN, 루안

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Date of Birth: July 21, 2003
Birthplace: Osaka Prefecture, Japan

Ruan Ohyama, otherwise professionally known as Ruann (stylized as RUANN) is a Japanese singer, who has been active since 2015, and is under record labels TOYS FACTORY and Sony Music Entertainment (SME)

Interested in music from a young age, Ruann taught herself instruments such as acoustic guitar, piano as well as Korean and English through learning apps. Her early exposures to the world of entertainment included an appearance on Kanjani no Shiwake 8, where she covered Lady Gaga's "Telephone" in 2013, and when she was chosen to sing the theme song for the kabuki adaptation of the manga One Piece, Super Kabuki II: One Piece, "Tetote", a composition written by Yujin Kitagawa of the Japanese band Yuzu. Ruann uploaded videos on social media of covers and busking performances. One of these performances was seen by Taka, the vocalist of the band One Ok Rock, who asked Ruann to perform their song "Wherever You Are" as a special guest during their 2017 Ambitions tour. In summer 2017, she released her first extended play Spice 13 Acoustic EP.

Her first release as Ruann was "Get the Glory", a digital single released in January 2018 used to promote Cygames, followed by "I Am Standing", a song used as the ending theme song for the second season of the anime March Comes in Like a Lion. In August, Ruann announced her major label debut through Toy's Factory. Her single "There's No Ending", used as the theme song for the film Anemone: Psalm of Planets Eureka Seven: Hi-Evolution (2018), was her most successful release to date, and her first release to chart on a Billboard Japan subchart.

Ruann's influences include Michael Jackson, Lady Gaga and Taylor Swift. She composes her music on the guitar.