We learn from our mistakes. Specifically, we learn how important it is to always use Legami's Erasable Gel Pen - Hippo, the only one with blue heat-sensitive ink that allows any error to be erased in an instant using the sphere at the tip. Collect them all, and don't worry about them running out: thanks to the refills sold separately, you can re-use your pens as many times as you like.
