freeOK概要：What would you do when your best friend is a mouse named Halvorsen, and everyone else thinks that the mouse is the worst creature in the world? Svein and his partner Dan were both alone until Melissa, the new girl in the class, suggested that they could participate in a large pet competition with their mouse. During the competition, Halvorsen ran away, and the newspaper wrote that due to mouse invasion, schools and hospitals would have to close...
