Heisuke is a tall man with a lean, athletic build. He has spiky brown hair, black eyes, and fair skin that complements his youthful appearance. A distinct bandage rests across the bridge of his nose, and a small crosshair mark is visible on his right cheek, emphasizing his role as a skilled sniper.

His outfit consists of a black jacket marked by a green line running across the chest and a patch on the left shoulder. He pairs this with green camouflage shorts, black socks, sturdy boots, and a backpack that he often carries with him. The overall look gives Heisuke a rugged yet casual appearance, fitting for a wandering marksman who lives by his own rhythm.

Heisuke can be described as childish and simple-minded, with an emotional yet endearing personality. He is optimistic, friendly, and often wears his heart on his sleeve. However, his low self-esteem makes him prone to crying far more easily than most people. His naivety often leads to comical situations—his thoughts, when seen through Shin’s clairvoyance, appear as crude doodles that perfectly reflect his air-headed nature. This same obliviousness once caused him to fail to recognize Sakamoto when he entered the store to assassinate him, only to be tricked and leave with a bag of pork buns instead.

Despite his scatterbrained personality, Heisuke is a remarkably skilled sniper, capable of precision and focus when it matters most. His talent was acknowledged even by Sakamoto himself during their confrontation in the amusement park arc. Ironically, Heisuke became emotional during their fight, heartbroken that the people he considered friends were now his targets. This moment revealed his deep desire for connection and acceptance, hidden beneath his goofy demeanor.

Heisuke’s warm personality makes him well-liked by those around him. He often spends his free time bonding with the employees of Sakamoto’s Store, even using his limited funds to treat them to food. His compassion is especially evident in how he interacts with children, as seen when he desperately tried to comfort a crying Hana. Despite his lack of confidence and occasional cluelessness, Heisuke’s genuine kindness and sincerity shine through. True to his quirky nature, he frequently ends his sentences with the word “Yo,” a small habit that perfectly encapsulates his playful charm.

Heisuke is a supreme marksman whose sniping abilities are unmatched in precision and instinct. Gifted with a natural talent for sharpshooting, he refined his skills to an extraordinary level during his academy years. Heisuke’s accuracy is so great that he was able to assemble his rifle, aim, and fire a shot at Sakamoto’s forehead all while leaping backward. His talent was further proven during the airsoft tournament, where he eliminated four players in an instant. Even Sakamoto himself admitted that he had never faced a sniper as exceptional as Heisuke. His most impressive feat to date is breaking Kamihare’s world record by hitting a target from a staggering distance of 8.2 kilometers.

During his days at the JCC, Heisuke earned the nickname “Dragoon” after setting an unbeatable record by assembling a gun and firing it ninety six times in a single session, a feat even Sakamoto could not surpass. His achievements quickly made him a legend among students, solidifying his reputation as one of the most talented snipers in the assassin world. Despite his cheerful and childish demeanor, Heisuke’s dedication to marksmanship and his ability to perform under pressure highlight his professionalism and natural brilliance. His endurance is equally impressive, as he continued to snipe accurately even after being stabbed in the abdomen, showing remarkable pain tolerance and composure in the face of injury.

Heisuke’s equipment is an extension of his expertise and creativity. He wields a self crafted bolt action sniper rifle fitted with both a scope and iron sight, designed for optimal precision and durability. His arsenal includes ricochet rounds capable of rebounding off multiple surfaces, allowing him to strike targets hidden from direct view. Alongside his weapon, Heisuke is always accompanied by his bird companion, Piisuke, who assists him in scouting and enhancing battlefield awareness. The two share a strong bond, with Piisuke bringing Heisuke both luck and companionship in his missions. Despite his modest lifestyle, Heisuke’s skill, resourcefulness, and partnership with Piisuke make him one of the most formidable marksmen in the world.