Usapyon : activation !

Ariane, a young girl passionate about science fiction, is totally delighted when she finds a Space Watch: with this watch, she will be able to see extraterrestrials! However, when she uses it for the first time, it is Usapyon who appears. He tells her that he is a Yo-kai... and that he needs her help! Will Ariane allow him to realize his dream? Find all the adventures of Nathan and his Yo-kai friends on the last page of your book!