Jill's Project is a project of Falcom's Masashi "Jill" Okagaki (keyboards and arrangement). The band has performed rock arrangements of Falcom songs as well as original compositions, both with and without lyrics. The other band members include Youichi Shigami (vocals), Katsumi "ANI-Katsu" Seki (bass), Masanori "Burny" Kusakabe (guitar), Takeshi Inoue (guitar), Yuji "YOU" Adachi (guitar), and Hiromi Suzuki (guitar).