Eiji has a very kind and selfless personality and is also inquisitive about things unfamiliar to him such as Ash Lynx's gun. As the series progresses, he starts depending on Ash, and is described by Ibe as gentle and shy while also having a sense of curiosity, fascinated about New York when first arriving to get photos for a magazine of gangs in New York. Eiji is sometimes mistaken as a child because of his youthful appearance, despite being nineteen, and is pointed out by Ash and many other characters to appear younger than the gang leader himself. Eiji has been described as innocent, but brave. Despite his innocent nature, he can be prone to make rather unhinged jokes on some occasions. He can be quite naive about the world of gangs and even American customs at times, such as the legality of guns and the overall safety in New York. He is generally empathetic and comforts Ash when he opens up to him about his trauma and promised to stay by his side. Eiji is quite perceptive and very
Speaks in steady, low phrases; tends to add small safety notes without being asked
