Similar to 恋ならとっくに始まってる

Kōsui (Melon Kinenbi song)

Koero! Rakuten Eagles

Golden Chinatown / Sayonara Usotsuki no Watashi

Kokuhaku Kinenbi

Kokuhaku no Funsui Hiroba

Koko ni Iruzee!

Kokoro & Karada / Lovepedia / Ningen Kankei No Way Way

Kono Chikyū no Heiwa o Honki de Negatterun Da yo! / Kare to Issho ni Omise ga Shitai!

Co-no-Mi-chi

Saa! Koibito ni Narō

Saigo mo Yappari Kimi

Sakura Chirari

Sakura Mankai

Summer Night Town

Samui ne

Some Boys! Touch

Thanks! (GAM song)