Bukiro is the Ultimate Collector. He’s a rather aggressive person by nature and this aspect of his personality only tends to show more when people disagree with him. He prefers to work alone than with others and overall doesn’t enjoy the company of other people, especially if he finds them dumb. He’s very picky about what he collects and makes sure his collections are as neat as possible.

He is cold towards every stranger he meets and doesn’t potentially warm up to anyone that tries to befriend him, leaving him as the loner of the cast. Though he doesn’t mind being alone, on very rare occasions he’ll work with people he considers smart, but hates when others catch him working with someone else.

Bukiro likes to read older books in his free time and finds vintage items to be very interesting. He despises messy collections that he comes across, especially if it's his own collection. He also doesn’t like it when he feels that someone around him is higher up in the ranks than he is.

Bukiro’s voice, like Naoki, is within the baritone range, similar to Gundham’s voice. However, he isn’t as well-spoken or enunciated.