Amateur busty girl takes on the challenge of stacking coins on her boobs in a boob balance coin tower! She places one coin on her boobs at a time, and for every 10 coins she stacks, the prize money increases to 10,000, 30,000, 50,000, 100,000, and 1 million yen! If she fails, she has to try again with more tickling! She changes into a swimsuit and carefully stacks the coins by lifting up her soft, jiggly boobs, but she's too greedy and the tower collapses! If she fails, she gets a dirty punishment game of having her big breasts massaged!