Kou Jun embodies the spirit of Gao Shun, a Three Kingdoms commander under Lu Bu. His consciousness inhabits a stuffed toy in the modern era, residing alongside Ryofuko—Lu Bu's reincarnation—and Chinkyuu, the spirit of Chen Gong. This plush form imposes severe limitations on him.

Damage to his stuffed body forces Kou Jun’s spirit to transfer into a replacement, a cycle frequently initiated by Ryofuko’s actions. His existence fuels persistent frustration, as his lecherous impulses mirror Chinkyuu’s yet remain eternally unfulfilled by his inanimate, non-human vessel.

Despite his soft toy appearance, Kou Jun retains core traits from his past as a formidable general: a bold demeanor and outspoken nature. The dissonance between his warrior spirit and harmless plush body consistently generates comedic tension. His character operates through this intrinsic clash—a once-mighty military figure confined to triviality while fiercely clinging to his historical persona’s intensity and vices.