First off, the title of this song "Raison d'être" refers to the purpose of something or someone's existence. Also, what is something or someone's ultimate goal is.
Another good song by Eve. the MV is beautifully animated, with meaningful lyrics.
(If ur not aware, Eve is known for working on Jujutsu Kaisen's OP, Dororo's ED2, as well as Promised Neverland's S2 ED)
The song slaps.
It's a fantastic production with wonderful colors and great camera work
ALSO: This MV solo's director (Nakayama Ryuu) directed Black Clover's 1st ED, and is also directing Chainsaw Man :D
If you like MV's go watch it :) AND, think of your raison d'être