Friendship Is Endless
Mikan fails her finals and has to take makeups. While stressing about what will happen to her if she fails the makeups, Mikan finds out that Hotaru is transferring after graduation. After talking to Natsume, Mikan decides to let Hotaru go. Then when Hotaru leaves without saying goodbye to Mikan the whole class chases after her. Mikan arrives and tells Hotaru that she has decided to stop following her but that she will be her friend forever.
Aired 14/05/2005EP 26 - Friendship Is Endless

Gakuen Alice
Sakura Mikan and Imai Hotaru are best friends, and Mikan is shocked to find that Hotaru is transferring to a school in Tokyo for gifted students like her - Alice Academy. Mikan hears rumors that the students are like prisoners there, and worried what would happen to Hotaru, she runs away to head to the school herself. She finds out all the wonderful things about this school. And she heads into a great adventure!!