During the broom flight class, Akko ends up falling from the top of the Tower of Luna Nova because she does not know how to ride her broom, end up receiving several wounds. That night, she argues with Lotte and Sucy about Shiny Chariot, lamenting that no one else sees how wonderful is.
The next day, Professor Ursula gives them a special class in which they must enter the dungeons under the Tower of Luna Nova and recover some valuable treasure avoiding the monsters. After helping Diana who was fighting a Minotaur, Akko, Lotte and Sucy were surprised by the appearance of the Ancient Dragon that Diana had awakened accidentally. Akko, in the trash, finds the Shiny Rod. Ursula instructs Akko to take the Rod to Sorcerer's Stone, where it absorbs part of the magical energy contained in the stone. When the dragon attacks, Akko manages to transform the Shiny Rod into the Shiny Arc, destroying the dragon. When Diana saves her from her fall, she asks about the Shiny Arc, which leads Akko to suspect that she is also a fan of Shiny Chariot.
During a special class by Professor Finnelan, Akko accidentally mixes a goblin with Sucy's mushroom in a potion, creating a huge monster mushroom that spreads venom all over the room. When Diana and Finnelan use Luna Lana to get rid of the monster, Akko, Lotte and Sucy are punished and forced to organize a parade for the Glatsonbury festival that recreates the witch hunt. Amanda, Constanze and Jasminka should work with them not to be expelled. Outraged by the parade that destroys the image of the witches, Akko decides to organize a fun festival that shows the good side of the witches, calling "Happy Hour Project".
While the six girls do their best to organize the parade, things do not turn out well, as no one apart from Amanda is good at dancing on her broom. When Akko suggests organizing a scene of a witch saving everyone from a monster, Sucy and Amanda make fun of her because she can not do it because she can not fly in broom or freely use the Shiny Rod. When Diana intervenes, she reprimands Akko to try to make the witches look bad using magic as a frivolous act, which leads them both to argue. That night, Lotte tries to explain to Akko that her plans would not work since the magic is not durable away from the Sorcerer's Stone, but Akko does not hear her concerned only that Lotte sings during the parade, eventually breaking the spiritual song score of her family, causing Lotte to become very angry.
The next day, while the six were in the town buying, Akko ends up fighting with Lotte and even with Sucy too. When a gang of rude children attack them, Akko realizes the problem of the limited use of magic in the town. At night, Akko is depressed by what happened, that's when Diana made her face that everything she was trying to do was a mistake just like the mistake that was Shiny Chariot, but this causes Akko to motivate herself again by remembering how the Shiny Rod absorbed Sorcerer's Stone magic, assuring Diana that the parade will be wonderful.
Over the next few days, Akko does her best to organize the parade on her own, finally getting Amanda, Constanze and Jasminka to help her. On the day of the parade, Akko gets the Shiny Rod to absorb Sorcerer's Stone energy and at night, they are able to use that energy to power their magic in the village. Waiting for Lotte and Sucy to appear, Akko decides to start the parade which is very good at the beginning, until the children steal the Shiny Rod. While trying to retrieve it, the Titan that was sealed in the Sealing Stones is awakened. Akko is sent to save to Thomas, soon to be saved of its downfall by Sucy who forgives it by everything. When Lotte appears using her song to calm the spirits that were causing disaster, she and Akko are again friends. When the Titand awakens completely, Ursula tells them to use Luna Lana to stop him. Although at the beginning the Titan is too powerful, with the support of all the people and the spirits, the three manage to use the Shiny Ballista to defeat the Titan, making the parade a great success.
Akko was born in an unspecified location in Japan. She is from a family without magical lineage. When she was six years old, her parents brought her to Shiny Chariot's magic show. Amazed and inspired by the show, she wished to become a witch someday just like Shiny Chariot. During her childhood she tried several times to fly in broom, only to fail and get hurt, receiving the ridicule of the other children. However, Akko always kept her dream of one day becoming a witch.
In order to achieve her dream, somehow Akko learned that the Luna Nova Academy, the school from which Chariot graduated, was accepting students without magic inheritance and managed to enroll there, despite her total ignorance of magic.