Zhuge Liang, known as Koumei Shoukatsuryou, mentors protagonist Rikuson Hakugen. He witnessed Sonsaku Hakufu kill Rikuson's father during a raid where Sonsaku seized the powerful Hereditary Seal, establishing its bond with Sonsaku and prompting Zhuge Liang's observation of fate's shifts.
He orchestrates Rikuson's service under Sonsaku in Koutou, positioning his pupil to monitor the seal's influence. Zhuge Liang operates from seclusion, guiding Rikuson while avoiding direct conflict. His role evolves when he engages Sonken, ruler of Go, persuading him through discourse to counter external threats.
Zhuge Liang's involvement deepens during the Choukou conflict, where his strategies employ supernatural elements like an ominous flute to manipulate battlefield events. His tactics blend ingenuity with psychological manipulation, often blurring moral boundaries. Later, he reunites with Rikuson in Ekishuu, reaffirming their master-disciple bond while advancing his agenda.
His relationship with allies strains, particularly during confrontations with defiant figures like Kan'u. Tension escalates when turmoil influences Ryuubi, making him a destabilizing force in Koutou that indirectly tests Zhuge Liang's control.
At Gojouhen, Zhuge Liang's ultimate objective is revealed: to harness the Hereditary Seal's energy through Rikuson's empowered right arm. This plan culminates in a decisive confrontation between mentor and disciple, framing their final encounter as the fulfillment of his long-designed path.
Throughout the narrative, Zhuge Liang transitions from observer to active schemer, leveraging his pupil's growth to achieve a culmination of mystical and strategic ambitions. His actions manipulate larger forces, regardless of personal loyalties or conventional alliances.