Ginji is one of the main protagonists from the anime and mobile game, a male high school student who once lived with a sense of apathy and indifference, having no dreams or personal desires. He resides in the Far East Country known as Japonesia and has two brothers, an older sibling named Kinichi and a younger one named Dozo, with their names collectively referencing the metals gold, silver, and bronze. His birthday is February 29th, making him a Pisces, with blood type A.

Personality-wise, Ginji is characterized by a stoic and calm demeanor, often described as a delinquent in bearing, yet he paradoxically finds that elderly people frequently stop him to ask for directions. He is defined by a deep-seated resilience and a strong sense of responsibility. Rather than being an emotionless hero, he is highly perceptive, capable of seeing through intricate conspiracies. Despite being aware of the traps laid for him, he chooses to accept difficult positions to protect others, embodying a role of quiet strength and burden-bearing.

Ginji’s primary motivation is intrinsically linked to his pursuit of "nothingness." Initially, he sought to destroy everything outside himself to achieve this state of void. His journey changes as he learns about the meaning of his unique power and the event known as the Twilight Judgment, which was a significant conflict where he demonstrated immense combat ability and leadership. He aims to return the anomalous "intersecting" phenomena of the unified world to nothing in order to prevent a catastrophic Holy War. To accomplish this, he sets his sights on the Far East Garden.

Within the story's structure, Ginji is one of the central figures aiming for the Divine Gate. Following his exploits in the Twilight Judgment, he was rewarded with the position of the organization's highest-ranking executive. However, this promotion was a calculated move orchestrated by the schemer Loki, who used the high-ranking title as a shackle to restrict Ginji’s movements and trap him within the political structure. Ginji accepts this role not out of ambition, but because the position gives him influence over core decisions and access to critical intelligence, allowing him to act as a deterrent against the coming war.

Ginji’s key relationships are varied and integral to his development. He is accompanied by Zero, a Great Spirit who governs nothingness, with whom he shares a deep bond as they travel to the underground realm of Agartha. He also encounters Awayuki, a fifth-generation autonomous weapon created using Ginji as a model. A significant and more personal relationship involves Tokiwa, a hybrid species Ginji finds in a prison. Ginji falls in love with Tokiwa at first sight, embarking on what he feels is a forbidden love, only to later discover that Tokiwa is male. His journey also brings him into conflict with Gareth of the special agency Knights of Round, who disapproves of Ginji's self-destructive tendencies, and Rasho, the gatekeeper of Mugen Station.

Throughout the narrative, Ginji undergoes development from a boy who was indifferent to everything into someone who defines his goal stoically as a way to prove himself to his former "nothing" self. He evolves by recognizing the value of companionship; even when trapped in a position of powerlessness under Loki's surveillance, he prioritizes the safety of his allies and seeks alternative paths to prevent disaster rather than simply erasing reality.

Regarding notable abilities, Ginji possesses extraordinary combat prowess and leadership qualities that allowed him to rise through the ranks of his organization. He holds a power related to "nothingness" and is one of the select individuals capable of aiming for the Divine Gate. He is described as being taller than his fellow protagonists Akane and Aoto, and he favors a specific food: ginkgo nuts. His fashion sense leans toward vulgar domestic brands.