This is a GUM by GIANNI CHIARINI bag. It comes with a charm in collaboration with demodee. You can remove the strap and use it as a handbag, or attach the shoulder strap for a crossbody or shoulder bag. I purchased it at Odakyu Shinjuku when ajolie was in the store. The demodee charm has been stored away, so there is some slight discoloration visible, but it's not very noticeable and might come off with some care.