Talk:Underground Treasure Chest 9/@comment-33213371-20171003092825/@comment-31932996-20171003105831

In fact I don't think buying any background is good unless you have a lot of koban to spare because you'll need it for events liike Village of Treasure where you need to pay 300 koban/run if you want to get a lot of beads. You have two daily refils of 3 (so 6 runs) for free but that's not enough to get the reward I think.