Omiya Shinobu has just become a first year high school student. Heading to school in an unfamiliar uniform, she finds a single piece of air mail on the counter in the entrance to her home. The sender is the daughter of the family she stayed with in middle school, Alice Cartalet!

Several weeks after arriving at Shinobu's home, Alice has grown used to life there and is enjoying her high school life in Japan. The mild-mannered and kind Shinobu. The composed but sometimes scatterbrained Aya. The bright and energetic Yoko with her monstrous appetite. Sensitive about her height and shy, Alice managed to make good friends and was spending her days happily, but... Alice begins wondering what her friends think of her and becomes lost deep in thought.

Shinobu stays home from school with a cold. While her friends at school are worrying about her, Yoko suddenly runs up and informs the group she found a letter in her shoe box.

The five girls excitedly discuss taking a trip together. Yoko, who wants to go to the beach, and Karen, who wants to go to the mountains, find themselves at odds. Overwhelmed my Karen's passion, the girls head to the mountains over their summer break...

Shinobu and Alice watch the morning horoscopes on TV. In contrast with Shinobu, who is delighted when her sign is declared the luckiest of the day, Alice is shocked when she learns her sign is the unluckiest. The superstitious Alice follows Shinobu, hoping to be as close to a lucky person as possible, but...

With the new term beginning, Alice is excited until she sees the class changes and immediately begins acting absent. Alice has been put in a different class from Shinobu. Her classmate Yoko becomes worried when she is unable to cheer up Alice.

Alice becomes a second year high school student and experiences her second spring in Japan. With the addition of class A's homeroom teacher Kuzehashi-sensei, the "golden days" of best friends Shinobu, Alice, Aya, Yoko, and Karen continue to shine!

Kuzehashi-sensei is concerned that her dear students seem to be afraid of her. How can she get to know them better...? Seeing how well Karasuma-sensei gets along with her students, Kuzehashi-sensei asks her to teach her how to make friends with her students!

A green summer landscape. Cute honey-colored houses. Alice walks down a path with Poppy. Alice and Karen have returned to England. She'd glad to see her family again, but she still misses Shinobu. But the distance between them makes their friendship even stronger.