Synopsis
This story follows a mysterious button that gives whoever presses it a million yen, but at the cost of spending 500 million years alone in an empty void. When those 500 million years conclude, the person loses all memory of the experience and returns to the moment they first pushed the button. A bearer of this button appears before three siblings—five-year-old Tonio, fourteen-year-old Jaibi, and seventeen-year-old Suneko—who urgently need money to pay for their father's hospital treatment.