OVA
Description
Kosuinen, born Nen Kosugi, operates as the brain henchman of the Clean Aku Trio within Skull Lease's Northern Ostendel Branch. Holding the position of head director, he serves as the trio's primary scientist, creating gadgets to sabotage Time Lease and combat Ippatsuman. Departing from earlier Time Bokan metaseries counterparts, Kosuinen possesses a hair-trigger temper that manifests a visible forehead scar when angered and maintains an overtly serious demeanor, contrasting the typical dramatic "lanky genius" archetype. Organizationally, he acts as second-in-command to Mun-Mun.
He is married to Tohoku Anna, with whom he shares children named Sorya and Korya. Kosuinen resides separately in an apartment complex to avoid his family. His marriage originated from Anna's resemblance to Mun-Mun, though he persistently pursues other women, particularly his coworker Piiko, whose presence excites him despite her consistent rejection. Anna's extravagant spending habits drain his wages on luxury items, straining their relationship.
Within the Clean Aku Trio, Kosuinen exhibits complex dynamics: maintaining a non-romantic attraction to Mun-Mun, occasionally confiding personal frustrations in Kyokanchin, and fluctuating between romantic interest and intense annoyance towards the disruptive later addition, Min-Min. Professionally, he designs mechas but primarily orders them from Skull Lease's Machine Friend division rather than developing most units personally.
A defining passion is his expertise in preparing soba noodles, a skill he fervently wishes to pursue professionally by operating a restaurant. Mun-Mun suppresses this ambition, fearing Kosuinen would convert Skull Lease into a noodle business. This aspiration materializes in Mun-Mun's hypothetical future vision depicting Kosuinen as owner of a global noodle chain.
His childhood involved bullying peers and cheating in athletic events, behaviors he retrospectively considers foundational to his current position. His determination to defeat Ippatsuman exceeds his teammates', culminating in a dedicated arc across episodes 26–30. During this period, he adopts the alias "Gyakuten Sanpatsuman," constructs mechas mimicking Tokkyu-Saurus and Gyakuten-Oh, and devises a high-risk plan to lure Ippatsuman without mecha support. The strategy inadvertently succeeds due to interference by Tamashiro Kakure, president of Skull Lease's Western Ostendel Branch, who fires diamond-tipped bullets that critically injure Ippatsuman.
Following Skull Lease's dissolution, Kosuinen departs his colleagues alone, boarding a train carrying only a job-search magazine. Unbeknownst to him, Mun-Mun and Kyokanchin share the same train, suggesting parallel uncertainties about their futures. His post-series activities remain unspecified, though material related to the Royal Revival OVA implies he may have transmitted his soba-making techniques to Boyacky of the Doronbo Gang.
In Time Bokan: Royal Revival, Kosuinen appears as a minor character without significant narrative development or background expansion beyond his established role in Gyakuten! Ippatsuman. His inclusion does not elaborate on activities after leaving Skull Lease or explore new character dimensions.
Broader connections within the Time Bokan universe include teaching Boyacky soba-making techniques, establishing a lineage-based association between the Clean Aku Trio and earlier antagonist groups like the Doronbo Gang through shared skills rather than direct familial ties.
He is married to Tohoku Anna, with whom he shares children named Sorya and Korya. Kosuinen resides separately in an apartment complex to avoid his family. His marriage originated from Anna's resemblance to Mun-Mun, though he persistently pursues other women, particularly his coworker Piiko, whose presence excites him despite her consistent rejection. Anna's extravagant spending habits drain his wages on luxury items, straining their relationship.
Within the Clean Aku Trio, Kosuinen exhibits complex dynamics: maintaining a non-romantic attraction to Mun-Mun, occasionally confiding personal frustrations in Kyokanchin, and fluctuating between romantic interest and intense annoyance towards the disruptive later addition, Min-Min. Professionally, he designs mechas but primarily orders them from Skull Lease's Machine Friend division rather than developing most units personally.
A defining passion is his expertise in preparing soba noodles, a skill he fervently wishes to pursue professionally by operating a restaurant. Mun-Mun suppresses this ambition, fearing Kosuinen would convert Skull Lease into a noodle business. This aspiration materializes in Mun-Mun's hypothetical future vision depicting Kosuinen as owner of a global noodle chain.
His childhood involved bullying peers and cheating in athletic events, behaviors he retrospectively considers foundational to his current position. His determination to defeat Ippatsuman exceeds his teammates', culminating in a dedicated arc across episodes 26–30. During this period, he adopts the alias "Gyakuten Sanpatsuman," constructs mechas mimicking Tokkyu-Saurus and Gyakuten-Oh, and devises a high-risk plan to lure Ippatsuman without mecha support. The strategy inadvertently succeeds due to interference by Tamashiro Kakure, president of Skull Lease's Western Ostendel Branch, who fires diamond-tipped bullets that critically injure Ippatsuman.
Following Skull Lease's dissolution, Kosuinen departs his colleagues alone, boarding a train carrying only a job-search magazine. Unbeknownst to him, Mun-Mun and Kyokanchin share the same train, suggesting parallel uncertainties about their futures. His post-series activities remain unspecified, though material related to the Royal Revival OVA implies he may have transmitted his soba-making techniques to Boyacky of the Doronbo Gang.
In Time Bokan: Royal Revival, Kosuinen appears as a minor character without significant narrative development or background expansion beyond his established role in Gyakuten! Ippatsuman. His inclusion does not elaborate on activities after leaving Skull Lease or explore new character dimensions.
Broader connections within the Time Bokan universe include teaching Boyacky soba-making techniques, establishing a lineage-based association between the Clean Aku Trio and earlier antagonist groups like the Doronbo Gang through shared skills rather than direct familial ties.