Publisher's Synopsis
France's best-selling children's emotional picture book, improves children's frustration tolerance and gets rid of inexplicable emotions, and untie the chain of jealousy with Gaston! Gaston is a seemingly ordinary unicorn whose mane changes color according to his mood! Today, little cousin Josephine is going to spend the night at Gaston's house. First, her mother prepared a surprise for Josephine; her father had a great time with her; he even gave her the last piece of cake after dinner. People all over the world are kinder to my little cousin! Gaston was so jealous, and felt as if his heart was tightly bound by iron chains.
