Aoki Radio no Arpeggio Kai Vol.4 / 蒼きラジオのアルペジオ改 Vol.4 / Aoki Radio no Arpeggio Kai Vol.4

Disc 1: New episode
Disc 2: CD-ROM containing episodes #37~50 in MP3 format

Personality:
[#37, 45. 46, 47, 49, 50]
Mai Fuchigami (Iona)
Manami Numakura (Takao)
Hibiku Yamamura (Haruna)

[#38, 43, 44]
Mai Fuchigami (Iona)
Manami Numakura (Takao)

[#39, 40]
Manami Numakura (Takao)
Hibiku Yamamura (Haruna)

[#41, 42]
Mai Fuchigami (Iona)
Hibiku Yamamura (Haruna)

[#48]
I 401 Girls:
Minami Tsuda (Iori Watanuki)
Nao Toyama (Shizuka Hozumi)

Guest:
Satomi Sato (Nachi): #37
Ayaka Fukuhara (Myukou): #41, 42
Suzuko Mimori (Ashigara): #45
Kazuyuki Okitsu (Chihaya Gunzou): #46

New episode guest:
Suzuko Mimori (Ashigara): #45