Minako Kotobuki (寿美菜子, born September 17, 1991) is a Japanese seiyū and singer born in Hyogo, Japan. She is best known for her role of Tsumugi Kotobuki in K-ON!. Kotobuki began her singing career with the performance of the opening and ending themes of the 2009 anime series K-On! with fellow voice actresses Aki Toyosaki, Yōko Hikasa, and Satomi Satō. Shortly after, she performed the opening theme of the 2009 Hatsukoi Limited series with Aki Toyosaki, Ayahi Takagaki and Haruka Tomatsu. The four are affiliated with Music Ray'n, an artist management and publishing group of Sony Music Entertainment.They are currently known as the musical group Sphere (スフィア, Sufia) and released their first single "Future Stream" on April 22, 2009. On September 15, 2010, Kotobuki Minako released her debut solo single called "Shiny+". <a href="https://www.last.fm/music/Kotobuki+Minako">Read more on Last.fm</a>. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.