Maira-chan's birthday is coming soon. Yume-chan and the others get excited about having a party, but Maira-chan seems to have something important that day ... Yume-chan and his friends thought it was a job, but on that day, on the anniversary of their mother's death, they went to Kyoto with their father to visit the grave. Yume-chan and her friends, who didn't know that her mother had died, are very surprised. Furthermore, Yuni and his friends are aiming for such Maira-chan ...