Chapter01/Marble-iro no Hi

Chapter01/Marble-iro no Hi (マーブル色の日) is the eleventh Japanese single release from Hitomi Yaida. It is also the first single released from the album Here Today – Gone Tomorrow. Also released as a limited edition with CD-Extra options with the associated PV's.

It peaked at number 9 in the Japanese charts on March 27, 2004.