These would make very wonderful guides towards making them for conventions and such.
*Underwear: There's no way there's ever been any official drawings of his underwear. But guessing based upon his background, it's gotta be a fundoshi. If he picked them up in Muenzuka (?), then it's not impossible that wears boxers or briefs from the outside world. But a Rinnosuke wearing briefs, man I hate that more than the fundoshi.Front sideShoes/boots: Black and white. Looks quite different from East Asian clothing. They look like rubber boots.Glasses: Under-frame, vaguely green. (I always make it golden.) It's kinda angular, but not very much so. I think it looks unfashionable.Left sideThe obi-age-like thing: Part of it resembles an obi-age on a kimono (it's the cord-looking thing, not the obi itself.) It's red. It's supposed to be a boring part, but it really stands out.Front sideBack sidePants: Sky blue base with white pattern.Front goes down below the knee. Sides go down to the calf. Both front and sides have a special Yin-yang Taijitu design.Overcoat: Two layers, bottom white and the top is a two-toned sky blue and black. The neck lining uses a special jagged triangle pattern. String/cord is fastened to the shoulders. Belts fastened around the arms. I've never seen materials of his back, so this is just my own supposition. It's probably tied together with a string in the back like kendo torso guards. There's two holes in the front, and a decorative string that's the same color as the obi-age comes out of them.*In the original work, it also appeared like thisTorsoChoker: A black choker. Nothing special.Bag: Almost certainly leather. I think it's probably a belt-like thing that fastens in the back.ApronUndershirt: The undershirt is probably something like this. I think it's best if the material for this is has really good heat retention and breathability, or something like that.