One day, Ayu and Nina was walking from the bookstore. Nina was telling Ayu that she had fun buying a lot of books and telling her each title. Nina kept on talking until she noticed thet Ayu wasn't listening… "Ayu, Ayu!" Nina said, Ayu shook her head and apologized to Nina for not being attentive and told Nina that she may just need some rest.

When Ayu arrived home, she quickly went to her room and lay on her bed. At the same time, she is looking at the letter she received the day before.

The letter is from her childhood friend. When Ayu was in kindergarden, she had a close friend named Azumi, they were always together until grade four.

When Ayu was in grade five, Azumi's family migrated to America.

Ayu felt lonely being alone. She is also sad because she badly missed her best friend. Ayu and Azumi used to be like cats and dogs. They always fought and later on, be friends again. Before Azumi left, they had promised to each other that they will meet again, And that day came soon.

Azumi told Ayu that she will go back to Japan after one week, but her letter from America reached their six days after, so the next day, they met at the park. At that time, Ayu was with Nina. Ayu introduced Nina to Azumi, and after, Azumi to Nina. Nina greeted Azumi with a smile. They three hanged together all day, but Ayu felt uncomfortable. Azumi had change!

On Monday, when classes started, Ayu was surprised to see Azumi at he campus. Azumi told Ayu that she enrolled there. Once when Azumi was with her new friends, Nina heard her saying bad things behind Ayu's back.

Nina kept it a secret at first because of the reason that she might had just heard wrong. After some investigations, Nina was really sure of what she heard from Azumi's mouth..

Nina finally told Ayu about it, but Ayu said that its nonsense. Ayu told her that Azumi wont do things like that that can hurt her. Azumi heard them so she came closer. Azumi defended that Nina is just saying bad stuffs about her to brake their friendship.

Nina soon became angry and walked-out . The whole night, Ayu can't sleep. She is thinking of what she will do about the situation until 5:00in the morning. She went to school without any sleep. When Nina saw her, Nina asked her if she's alright. But when Azumi saw her, she laughed and told Ayu that she looks ridiculous because of her swollen eyes. Ayu felt shocked about it. When Nina can't stand seeing Ayu being treated like that, Nina told Ayu to choose between her or Azumi. Ayu told them both to give her time, suddenly the bell ranged.

At the afternoon, Ayu feels so hard because of carrying a big decision. Ayu told Azumi that she had been a good friend and also told her that if she would like to have friends that don't despise her, she should correct her attitude. Ayu apologized to Nina for not believing on her. On that fight, their friendship grew stronger and promised to each other that they will believe on whatever each of them says.