Jun'ichi, with the help of his group of friends (the self-appointed "Support Team"), manages his daily life in Nemu's absence. On a stormy summer day, a mysterious young girl arrives at his door.

Jun'ichi and Kotori decide to skip school and help the girl, Aisia, find her destination on a rain-soaked map written in a foreign language.

After learning that grandmother Yoshino is dead, and after Jun'ichi inadvertently shows his only magical skill, Aisia decides to make him her "Master". When Mako discovers her, she insists on having Aisia stay at the Mizukoshi residence.

Convinced that Jun'ichi studies at a school of magic, Aisia sneaks into Kazami Academy.

Aisia keeps a close eye on Jun'ichi to "catch" him using magic, despite his insistence that he can only conjure Japanese confections.

Rumors abound after Miharu discovers a letter in her shoe locker.

A fight with Nemu over Aisia living with Jun'ichi is exacerbated when he becomes jealous of the new doctor, Akishima, in the infirmary.

Jun'ichi attempts to find Nemu in the rain. After another heated fight with Nemu, he confronts Dr.Akishima.

Aisia (after a chat with Misaki) and Miharu concoct a scheme to get Jun'ichi and Nemu to reconcile. At the base of the dead cherry tree, Jun'ichi and Nemu talk about his grandmother.

Jun'ichi and Nemu lose sleep watching a drama series on DVD. Left alone, Aisia joins Tamaki's miko club, thinking that Shinto is an eastern form of magic. She decides to use her newfound knowledge on the school's baseball team, who is known for fifty straight losses without even a hit.

When Nanako has trouble making a deadline for the final chapter of her magical girl comic, Aisia decides to provide some inspiration.

As Jun'ichi and Nemu plan for the imminent summer vacation, Aisia continues her solo magic training.

During a trip to the beach, Aisia discovers Kotori's hidden feelings for Jun'ichi.

Aisia tries to push Kotori closer to Jun'ichi, but Kotori accepts that she will never have him.

Aisia develops feelings of rivalry towards Nemu, and of affection towards Jun'ichi.

Aisia tries to compete with Nemu in looking after Jun'ichi (to no avail), and accompanies them on a date. She begins to understand how much Nemu cares for him, but is confused by his seeming lack of understanding or gratitude.

A blond-haired, voluptuous young woman with twin ponytails is spotted on the island. Thinking that Sakura has returned, Jun'ichi, Nemu, and their friends follow Utamaru to see if he leads them to her.

After a welcoming party for Sakura, the Asakuras and their friends repair the neglected Yoshino house. Sakura shoots down Aisia's hopes of magic lessons, and tries to explain the dangers of magic.

Confused by Sakura's rejection, Aisia asks Kotori about what happened two years ago. She decides to see if everyone's desire can come true through the cherry tree again.

Sakura talks Aisia out of trying to revive the cherry tree, but Aisia questions her desire to be with Jun'ichi.

Sakura and the other girls try to get Nemu and Jun'ichi together during a midsummer school day.

Jun'ichi organizes a study session to help finish his neglected homework, but the other girls don't remember that he and Nemu are more than siblings, and even they begin to doubt their relationship.

Sakura, who hadn't seen Jun'ichi or the girls for a day, suddenly sees the cherry blossoms revived and certain memories erased.

Like a rewound clock, life becomes a semblance of what it was before Jun'ichi and Nemu became lovers. Sakura confronts Aisia's world with a warning.

Although everyone now has a fair chance of being with Jun'ichi, he and Nemu become depressed. Suginami and Kotori bring the two back together to challenge this reality, and Aisia realizes the stubborn power of the cherry tree.