"vestige") is a song by Japanese singer-songwriters Milet, Aimer, and Lilas Ikuta.

It was released on December 17, 2021,[1] as YouTube channel The First Take's second collaboration project after Lisa and Uru's "Saikai".

Written and produced by Vaundy, the song expresses the good feeling of facing yourself and the people.

[2] The song accompanied Sony's wireless noise-canceling earphones WF-1000XM4 advertisement, starring the singers and first launched on November 4.

[5] The singers and Vaundy gave a televised debut performance of the song at 73rd NHK Kōhaku Uta Gassen on December 31, 2022.