This is a China-exclusive ita-bag of Yoichi Isagi from Blue Lock. I purchased it from this site! I haven't used it even once since I bought it, but there was a small stain under the face from the time of purchase, and there was also a stain on the back ( ; ; ) The one on the face has faded a little when I wiped it off, but I think the one on the back won't come off unless I wash the whole bag. Immediate purchase is OK!