Hello! I'm Japanese and I use translation to play this game when it's difficult. This game is super fun and hot. However, I'm currently having trouble progressing through the game. I'm in piratetown and I'm doing a quest to upgrade my guild's badge from bronze to silver, but when I try to ask Buba to upgrade it, I get a screen where I can buy an empty bottle, so I can't upgrade. I tried various things myself, but I couldn't figure it out, so I would like some help.