Buso Renkin
Watsuki revealed in an interview with "One Piece" author Eiichiro Oda, who briefly worked for him as an assistant on "Rurouni Kenshin", that he had considered making a one-eyed protagonist for "Gun Blaze West". However, to avoid accusations of plagiarism from the media, Watsuki scrapped the idea when he found out that Oda had early plans to have his "One Piece" character Roronoa Zoro lose an eye at some point in that manga. Watsuki intentionally shortened the overall dimensions of his characters in "Gun Blaze West", a technique he carried over while drawing children in his next manga "Buso Renkin".