Gruppo concrete river

(CT20) [CONCRETE RIVER (Kanzaki Gorou)] Watashi-tachi no Yume, Sore wa H na Tantei ni naru koto desu. (Tantei Opera Milky Holmes)

(CT19) [CONCRETE RIVER (Kanzaki Gorou)] Futari wa H na Tomodachi (Tantei Opera Milky Holmes)

(SHT2013 Haru) [CONCRETE RIVER (Kanzaki Gorou)] Rival Sousasen (Tantei Opera Milky Holmes)

(C83) [CONCRETE RIVER (Kanzaki Gorou)] Kobayashi-san, Kore ga Tsuyosei Hatsudou no Toys Desu! (Tantei Opera Milky Holmes)