TV-Series
Description
Bihei is a native of Jouto Village in the state of Qin and is one of the oldest and most loyal veterans of the Hi Shin Unit, having served since its formation as a 100-Man Unit. He grew up alongside Shin and Hyou, and despite initially trying to pick a fight with Shin as a teenager, he was quickly defeated. This event led to a lasting friendship that also included his younger brother, Bi Tou. Physically, Bihei is distinguished by his prominent buck teeth and a small goatee, bearing a strong resemblance to his father in his youth.

In terms of personality, Bihei is presented as a nice and relatively simple man, but his most notable traits are his pronounced cowardice and lack of courage. He is prone to bragging and is a habitual liar, often fabricating stories to make himself seem more impressive. He frequently calls Shin an idiot for his grand ambition of becoming a Great General, yet this stems from a place of deep familiarity and concern rather than genuine malice.

Bihei's role in the story is primarily that of a grounded, relatable presence within the Hi Shin Unit. He serves as a squad leader and has risen to the rank of 300-Man Commander, leading his own Bihei Unit within the larger army. His motivations are not driven by glory or high ambition. Instead, he is motivated by a sense of duty to protect his childhood friend Shin and to survive the brutal wars to return to his family. He is married to Tou Bi, with whom he has a son named Bi Tou II, and his family in Jouto Village remains his primary reason for staying alive on the battlefield.

His key relationships are central to his character. The most significant is his bond with Shin, which has existed since childhood. While he belittles Shin's dreams, he is fiercely loyal, and their shared history provides an emotional anchor for Shin, reminding him of his origins and the friends who have always supported him. After the death of his younger brother, Bi Tou, during the Battle of Bayou, Bihei's commitment to his surviving comrades intensified, evolving from simple self-preservation to a determination to ensure the collective survival of his unit. He also holds great respect for Kyou Kai, acknowledging her superhuman combat abilities to others after witnessing her in battle.

Bihei undergoes a notable development throughout the series. Initially, during his first major battle at Dakan Plains in the Keiyou Campaign, he is paralyzed by terror when confronted with the chaos of war. He is unable to move and must be saved by his squad leader, Taku Kei. However, when his brother is in mortal danger, Bihei overcomes his fear enough to stab an enemy soldier. Over time, through continuous frontline exposure, he develops a gradual resilience. While he never loses his cautious nature, he becomes a more reliable soldier, capable of performing necessary tasks like helping to construct barricades from fallen soldiers' bodies during a chariot assault. His role is understood as a critical part of the unit's heart, representing the ordinary soldier who follows Shin's dream willingly, in stark contrast to the brutal methods of other armies.

As a soldier, Bihei does not possess any exceptional martial abilities. He is a standard infantryman whose primary weapon is a spear. His combat effectiveness relies on basic infantry techniques and the strength of fighting alongside his unit. His true value lies not in his offensive power but in his perseverance, his loyalty, and his function as an emotional and psychological support for the Hi Shin Unit's leadership.