Joukyou Seikatsuroku Ichijou (上京生活録イチジョウ, Life in Tokyo Ichijou) is a spin-off from the Kaiji series which follows Ichijō, the young manager of a casino owned by the Teiai Corporation and creator of The Bog. It is a prequel to Kaiji, taking place 7 years before the events of the main story. Before his fight to the death with his nemesis, Itou Kaiji, Ichijō had a youthful period when he was still smoldering and unable to make anything of himself. The story is set in Ooyama, Itabashi, Tokyo, a "bog" that has swallowed up the dreams, hopes, and despairs of young people, and is about the ambitions and difficulties of freelancer Ichijou and his younger colleague Murakami who move into the capital and live in a tiny apartment.
- Joukyou Seikatsuroku Ichijou and 1-nichi Koshitsuroku Numakawa are the only two spin-offs that are not animated.