Plot
Over fourteen years prior to the main events, a Japanese archaeologist named Jidan discovers the Crow Statue within the ruins of Crow Island and accidentally falls into the Magical Realm. There, he is captured and imprisoned by Grande, the ruler of the warlocks. A witch soldier named Atelia rescues him, and the two later have a son named Lennon. To prevent the dark magic within the True Book of Spells from corrupting the Human Realm, Jidan leaves Atelia to seal the book away. During his return journey, he becomes separated from Lennon, who grows up to become a pirate on the Interdimensional Sea. Jidan later marries Yoko, and they have a daughter named Arusu. He teaches Arusu to believe in magic and gifts her the True Book of Spells on her fifth birthday before departing once more to search for Lennon. Instead, he is imprisoned for six years in Wizard Kingdom, the capital of the Warlock Realm.
In the present, eleven-year-old Arusu is summoned to the Magical Realm by Lennon and the True Book of Spells. She is captured by witches alongside a mina fairy but is freed by Eva, a young witch grateful for Arusu’s kindness. Though thrilled to be in a world of magic, Arusu disagrees with the witches' exploitation of fairies as sources of power. After releasing the captive fairies, she is tasked with lifting the Curse of Eternal Youth from Eva and another apprentice witch, Sheila. Atelia, now one of the Three Sages, dispatches a special task force to recapture the fairies, but Arusu and her friends evade them, settling together in Dragon House.
During the witch evaluation, a hydra fairy attacks, revealing the fairies’ escape to the warlocks. Arusu sacrifices herself by turning to stone to protect the realm, but she is revived by Qoo, a failed witch whose magic restores her. The warlocks soon invade, seeking the True Book of Spells, fairies, and a witch to perform dark magic. With the help of the enigmatic Sigma, Arusu and her friends infiltrate the Warlock Realm, where they discover a society ruled by science. After being exposed, they flee and are later sheltered by Wil, a rebel fighting for the oppressed wizards. At the Sanctuary, Sheila learns from Sigma of the impending destruction of their realm and the true gateway to the Human Realm. Following their escape, Arusu proposes forming the Magical Girl Squad to protect magic and fairies. During their celebration, Sheila drugs Arusu and sends her aboard Ludens, a ship deporting failed witches. Meanwhile, Sheila spies on the Three Sages under orders from the Grand Master of Witches, hoping to lift the curse from Eva. Arusu survives an explosion and returns with Lennon, who calls himself her "mirror." Meanwhile, Sigma, imprisoned alongside Jidan, learns of the archaeologist’s past. Eva begins experiencing visions of an old man who strengthens her magic.
As tensions escalate, Atelia declares war on the warlocks, blaming them for the realm’s decay. Arusu intervenes, urging cooperation instead of conflict. Atelia then reveals her past with Jidan and her role in Lennon’s birth, shocking Arusu. When warlocks capture Lennon, mistaking him for Arusu, they demand the True Book of Spells in exchange for him and Jidan. Amid the chaos, warlock commander Luca brands humans as enemies for withholding dark magic. Atelia confesses her treachery and offers herself in Lennon’s place, redirecting the crowd’s anger. Arusu negotiates with Grande, surrendering the True Book of Spells to secure her father and Atelia’s release. As Wizard Kingdom collapses, Sigma aids Arusu’s escape, recognizing her as the prophesied savior. Jidan sacrifices himself to save Atelia at Hydra Lake, leaving Arusu distraught. Eva’s magic wanes as a plague spreads, but after another vision, she regains her power through the True Book of Spells.
The realm begins crumbling under dark magic’s influence, and Grande reveals that Eva’s despair has made her his pawn. Understanding that dark magic thrives on negativity, Arusu rescues Eva, using the magic of light to restore the realm. United, witches and warlocks rebuild their world. The Grand Master lifts the curse from Sheila and Eva, inviting Arusu to remain, but she chooses to return home. After an emotional farewell, an interdimensional siren transports her back to Japan, where she is joyfully reunited with her parents.
