I Won't Let Alice Get to Me - S1.E3

Mikan learns that everyone in Alice Academy has an Alice and that people with Alices are valued by the world. Alice Academy was designed to train these "elites" and so only those with Alices are allowed in the school. When the class finds out that Mikan doesn't know her own Alice they start to bully her but Mikan stands up to them and says that she trusts Narumi who told her she had an Alice. Natsume then challenges her: if she can survive going through the North Forest then he and the rest of class will accept her.