TV-Series
Description
Seiya Ichijō manages an illegal Teiai Group casino, specializing in preventing major patron payouts. His key tool is "The Bog," a rigged pachinko machine he designed. This machine uses balls valued at 4,000 yen each—far exceeding legal limits—and incorporates hidden countermeasures ensuring near-zero win probabilities. Defying these odds triggers a massive 600-700 million yen payout, highlighting The Bog's extreme profitability for Teiai.

Ichijō sports a distinctive red or brown mullet hairstyle (black in the manga) and possesses effeminate features. He typically wears a black suit with a red dress shirt and white tie. He projects calm confidence and superiority, viewing casino patrons as "worthless trash," a perspective hardened by witnessing their desperation and losses. This demeanor masks underlying insecurity and vindictiveness, especially when facing personal slights or failures.

His arduous climb within Teiai began with menial tasks like cleaning toilets, including enduring the humiliation of drinking wine from a basin used by Chairman Hyōdō for foot-soaking. Lacking a college degree and resentful of academically successful former classmates, he harbors deep resentment towards those belittling his position, often spying to confirm their negative opinions. His ambition targets Teiai's power structure: he aims to become right-hand man to Yoshihiro Kurosaki (Hyōdō's designated successor) and ultimately control the organization's finances.

In *Chūkan Kanriroku Tonegawa*, Ichijō appears during Yukio Tonegawa's casino visit. He ingratiates himself with excessive praise and secretly manipulates The Bog to ensure Tonegawa wins—a tactic Tonegawa detects but tacitly accepts without confrontation, illustrating Ichijō's sycophantic approach to superiors while maintaining an illusion of control.

His storyline in *Tobaku Hakairoku Kaiji* concludes with downfall. After Kaiji Itō and his team strategically defeat The Bog, Ichijō faces Hyōdō's wrath for the colossal financial loss. Hyōdō sentences him to 1,050 years of labor in Teiai's underground facility as repayment, dragging him away while Kaiji tauntingly proposes a future rematch.

The spin-off *Jōkyō Seikatsuroku Ichijō* explores his pre-Teiai youth, focusing on social isolation and psychological struggles. Key episodes depict his traumatic encounter with a multi-level marketing scheme (mirroring the creator's real-life experience) and highlight Murakami's role as a grounding foil whose contrasting levity mitigates Ichijō's intensity. This narrative delves into his formative insecurities and reinforces his fixation on transcending societal marginalization through Teiai's hierarchy.