Drama CDs

Drama CD 1 Dragon God of Nara まほろばの龍神 Mahoroba no Ryuujin

Drama CD 2 For You, My Beloved 最愛あなたへ Saiai no Anata e

Drama CD 3 Night Wings この夜に、翼を Konoyoruni Tsubasa wo

Drama CD 4 Oh Eagle, For Whom Do You Fly 鷲よ、誰がために翔ぶ Washi yo, Tarega Tameni Tobu

Tour of Working Hell バイト地獄巡り編 Baito Jigoku Meguri Hen

Cobalt CD 2004 (Audio track 02)

Tokuten Drama CD from the OVA DVD set

Cobalt CD 2005 (Audio tracks 01 and 06)

Cobalt Original Drama CD 2008

Takaya's Revenge 高耶リベンジ編 Takaya Ribenji Hen

Shimanto Diary Cobalt Tokimeki Drama Theatre II 四万十日記（コバルトときめきドラマシアターⅡ）

Cobalt Tokimeki Telephone