"Butterfly") is a song recorded by Japanese singer Shizuka Kudo for her eleventh studio album, Doing.

[1] The B-side, "Melody", served as ending theme to the 1996 AX tanpatsu drama Ren'ai Zenya: Ichido Dake.

"Chō" was co-written by Kudo, under the pseudonym Aeri,[2] The Checkers's Naoyuki Fujii and Akihisa Matsūra.

During the recording, Kudo suggested a few changes to the melody to Fujii, who chiefly worked on the demo for the track, which were kept on the final cut of the song.

The single's coupling song, "Melody", written by Aeri and Hideya Nagazaki, was originally intended to be released as the A-side, but as the song started coming together, it was decided that the showier "Chō" would be made into a single instead.