Band members
Official members
Since reformation in 2016, Esprit D'Air is a solo project led by one of the founding members, Kai.
Kai (海) / Vocals, guitar, multi-instrumentalist & producer
Since 2016, Kai records and produces all the songs by Esprit D'Air, including the award-winning album Constellations, and most recent works 'Leviathan', 'Calling You' and others.
Birth: 02/21
Main equipment: Shure SM58, Schecter Omen Extreme-6, Ibanez S570B
Favorite artists: Iron Maiden, Mötley Crüe, L'Arc~en~Ciel, X JAPAN, Van Halen, Alice in Chains, Megadeth, Queen, Linkin Park, DEAD END
Instagram: @espritkai

Live members
For live shows, Kai is accompanied by a group of talented session musicians.
- Ryoma "Ryo" Takahashi – guitar (2016–present)
 - Jan-Vincent Velazco – drums (2016–present)
 - Yusuke Okamoto – guitar (2019–present)
 - Takeshi – bass (2019–present)
 - Kazuki Nishigaki – bass (2020)
 - Yuri Shibuichi – bass (2019)
 - Andre Joyzi – drums (2020)
 - Taku Miyamoto – drums (2018–2019)
 - Chris Allan-Whyte – drums (2016–2017)
 - Jimmy Pallagrosi – drums (2016)
 
Past members (2010 - 2013)
List of past members of Esprit D'Air.
- Ellis – bass (2010–13) then live bass (2016-2019)
 - Daishi – drums (2010–13) then live drums (2016–2017)
 - Coma – lead vocals (2013)
 - Tatsuya "Hakuren" Nashimoto – guitar (2013)
 - Yoshisuke Suga – vocals (2010–13)
 - Yuki – guitar (2010–11)