Board Thread:News and Announcements/@comment-32793308-20170924194449/@comment-30081816-20170925121859

His outfit seems really similar to Kenshin's so I'm also thinking that this guy may be Azuki, assuming that Osafune swords belonging to the Uesugi clan have the same dress code.

Also the word Azuki( 小豆)  from Azuki Nagamitsu's name literally translate to "small bean". Azuki is also a type of bean that has a reddish color. So if this guy really is Azuki he might have reddish-brown hair. But again him having red hair would be so out of place since his outfit is mostly blue-ish and gray.