Buchou to Kachou | 部长与课长 1-3
Sabbath wa Houkago, Chikashitsu de | The Sabbath happens after school, in the underground room
(C71) [Kensoh Ogawa (Fukudahda)] Ashford Gakuen Underground (Code Geass) [English] [Decensored]
Kenryokusha ni Sakaraezu 2-koma Ochisuru Hon
[Red Ribbon Revenger] Valhalla ~Joshou~ (Tokyo Underground & Spiral)
[Ukatsu de wa Nai (noukatu, Minase Kuru)] Vtuber Sokuhame Kairaku Ochi Hon (DeepWebUnderground, Tsukino Mito, Shizuka Rin) (English) (Pangean) [Digital]
Underground
Ningen wa oroka
Friends Gyaku Rape Goudoushi 2
Chika Tougijou Sen - Underground Colosseum Sen 4 | 지하투기장 센4
Sofia-san wa Kashikoi ♥
Underground Hotel Vol. 3
Hatsukoi wa Jukusei Sasete
[TLG (bowalia)] Chika Tougijou Sen - Underground Colosseum Sen [English] [Sexy Akiba Detectives] [Digital]
Futari no Nichiyoubi
Pedolia! underground
[ffkan]Underground Battle 5
[TLG (bowalia)] Chika Tougijou Sen - Underground Colosseum Sen [Chinese] [沒有漢化] [Digital]