PENICILLIN featuring Chisato - FLY
Nakajima Saki, Okai Chisato, Hagiwara Mai (C-ute) - Kimi no Senpou
Chisato - Wake Up! (Gokudo-kun Manyuki)
Yajima Maimi & Okai Chisato (C-ute) - LALALA Shiawase no Uta (2012 Shinsei Naru Ver.)
Okai Chisato (C-ute) - Tokai no Neon ga Odoroku Kurai no Utsukushisa ga Hoshii
Umeda Erika, Arihara Kanna, Okai Chisato (C-ute) - Bokura no Kagayaki
Fujimoto Miki with Okai Chisato, Hagiwara Mai (C-ute) - Samui Kara Fuyu da mon! ~Doumokou mo Naissu yo Mikitty~
Okai Chisato (C-ute) - Love Namida Iro
Okai Chisato (C-ute) - Romantic Ukare Mode
Okai Chisato (C-ute) - Egao ni Namida THANK YOU! DEAR MY FRIENDS
Umeda Erika, Okai Chisato, Hagiwara Mai (C-ute) - One's LIFE
Okai Chisato - Suiiitsu --- Live
Okai Chisato - Namida no Iro (Acoustic Version)
Okai Chisato - Saikokyuno enjoy Girls
Okai Chisato - Bokura no Kagayaki
Okai Chisato - Shoushitsuten -Vanishing Point-
Arihara Kanna, Okai Chisato (C-ute) - Sweeeets→→→Live
Chisato - Wake Up!(Gokudou-kun Manyuuki OST)
Triplet (Okai Chisato, Takagi Sayuki, Kudo Haruka) - Dream Last Train
Okai Chisato (C-ute) - Tokai no Neon
C-ute - Kimi wa Jitensha Watashi wa Densha de Kitaku (Okai Chisato Ver.)
C-ute - Kimi wa Jitensha Watashi wa Densha de Kitaku (Okai Chisato Vocal Ver.)