Watsuki's assistant Eiichiro Oda; in Japanese, is a slang word for homosexual, while the word for a scythe is . Watsuki used ideas from assistants to create many of the Juppongatana and Kamatari was one he seized immediately. Still, when coming up with the specifics, the concept "just wasn't coming together." In the beginning, some of his ideas were "male-appearing on the surface, but personality-wise, will be feminine," "A very erotic and seductive, womanly appearance from the outside, but a manly man on the inside," and "a big macho gay guy." But a friend of Watsuki's suggested making Kamatari "just a 'pretty girl' type," leading to the solidification of the character. Watsuki planned for Kamatari to have a "light-hearted and cheerful" personality, but found complications when a "more serious side" began to emerge, leading him to feel some regret with the outcome; he admitted that one of his bad habits is to cross the fine line between "serious" and "depressing". Watsuki added that the next time he uses the character, he would try to "keep his outlook sunny" while not compromising the "essential self." Watsuki used Ikari Yui from Neon Genesis Evangelion as the visual model for Kamatari's face; but colored the hair black, exposed more of the forehead, and had the back of Kamatari's hair "flip out as I've seen so many high-schoolers do these days." Watsuki found that the character's triangular silhouette has influences from Rei-Rei in Vampire Hunter. The large chain-scythe that Kamatari uses exists in real life, but Watsuki made the blade larger to give it "a real super-impact look" and noted that it is not intended to be used in the way that Kamatari does. Kamatari came in sixteenth place in the series' second character popularity poll and tenth in the third. Kariwa Henya , known as the , is a member of the Juppongatana sent to attack Aoi-Ya. He wears a black cloth over his mouth and what looks like a black robe, but turns out to be a glider shaped like bat wings folded around his body. His battle technique is called , in which he uses dynamite to lift himself into flight and attack from above with a blade on his arm before blowing himself back into the air. The power of flight is harnessed thanks to Henya starving himself to extreme emaciation; he is so light that the constant uplift from