Hanada is a minor antagonist who appears exclusively in the manga series, as he was not featured in any anime adaptation. A member of the rebellious Ittō-ryū school of swordsmanship, Hanada is characterized primarily by his cocky and arrogant demeanor. His personality is further defined by a pronounced aversion to sunlight, a trait that sets him apart from many other characters.

In terms of his role within the narrative, Hanada allies himself with two fellow Ittō-ryū swordsmen, Higa and Uruma, despite openly showing distaste for them. Together, they form a trio that launches a surprise attack on the protagonist, Manji, who had been expecting to face only a single enemy. Hanada enthusiastically participates in this attack, even breaking a rule of his school by joining the fray when his initial role was limited to a supporting action. He demonstrates a cold and analytical mindset during the fight, believing that even an immortal being like Manji could not survive multiple strikes to the head, and is surprised when his attacks prove less effective than anticipated. After his allies are defeated, Hanada continues the battle against Manji. He initially gains the upper hand, but his confidence proves to be his undoing. When Manji escapes into a pond, staining the water red with Uruma's blood, Hanada begins to panic. This loss of composure gives away his position, allowing Manji to strike from below and slice him in two, ending his life.

Hanada is depicted as a highly skilled swordsman, capable of fighting on par with Manji in a direct confrontation. His confidence in his own precision is reflected in his choice of weaponry. He wields a unique pair of very narrow swords known collectively as Enchū-maru, which translates to Swallows of Death. One of these swords features a small hooked blade, while the other has a straight, small blade attached to the end of its pommel. The creator of the series noted that these weapons would only be lethal if the user struck a precise and vital point, underscoring Hanada's reliance on skill and accuracy. Physically, Hanada is notable for his long hair and his mismatched glasses, one lens of which is round and the other quadratic, a distinctive feature. The creator originally intended for Hanada to resemble the musician John Lennon, but the final design ended up appearing more like an ordinary otaku or enthusiast.