Nao Tokui is a Japanese singer-songwriter who has been active in the music industry since 2012. She is known for her soulful vocals and introspective lyrics, which often explore themes of love, loss, and self-discovery. Tokui's music has been praised for its emotional depth and its ability to connect with listeners on a personal level. She has released several albums and singles, including "Distant Echoes through the Mist," "Dawn Patrol," and "A Mission." Tokui has also collaborated with other artists, such as the Japanese rock band Bump of Chicken.