TV-Series
Description
Allie, known as Ayu Ayukawa in the original Japanese version, is a supporting character in the Yu-Gi-Oh! ARC-V anime. She is one of the younger students at the You Show Duel School, where she studies under the tutelage of Skip Boyle and alongside the protagonist, Yuya Sakaki.

In terms of background, Allie is a student who enrolled at You Show Duel School after being inspired by Yuya's dueling. She is easily recognized by her appearance, which includes red hair, fair skin, golden eyes, and a large, multi-colored headband. Her outfit typically consists of a short cream t-shirt layered over a long-sleeved pink and red striped shirt, paired with a red skirt, long black tights, and brown shoes.

Allie has a sweet and caring personality, though she also possesses a notable sense of determination and immeasurable attitude when it comes to dueling. She is an enthusiastic supporter of her friends and fellow duelists. Her primary motivation is to become a great duelist herself, and she deeply admires her senior, Zuzu Boyle, whom she treats and looks up to like an older sister. She dreams of following in Zuzu's footsteps and aims to entertain audiences with her own duels.

Within the story, Allie serves as a recurring supporting character representing the You Show Duel School. She frequently appears in the audience to cheer on Yuya and her other classmates during their duels, acting as a loyal friend and a member of the school's close-knit community. Her most significant role in a duel occurs during the Arc League Championship, where she competes in the Youth Class. Her opponent in the tournament is Riley Akaba. Despite her efforts, she loses the match, a result that leaves her deeply depressed even after her friends try to reassure her. Following this event, she continues to be a witness to the escalating conflicts, learning about the invasion of the Obelisk Force from the Fusion Dimension and later reacting with shock to the appearance of a massive dragon tearing through dimensions.

Key relationships for Allie include her close friendship with her fellow You Show students, Frederick and Tate, with whom she is often seen. The three of them form a trio of Yuya's most loyal fans and supporters. Her most notable relationship, however, is with Zuzu Boyle, whom she views as an older sister figure. This dynamic is described as being similar to the relationship between Yuya and Tate.

Throughout the series, Allie does not undergo a dramatic character development arc. Instead, she remains a constant source of support and a grounding presence, representing the perspective of the younger students at the school. As the plot progresses and the stakes become higher, her role shifts from that of a cheerful cheerleader to a more concerned observer, witnessing the harsh realities of dueling in the larger dimensional war. She is eventually transported to the Fusion Dimension along with her friends when a dimensional rift expands and engulfs Paradise City.

In terms of notable abilities, Allie is a competent Action Duelist who uses an Aquaactress Deck. Her strategy revolves around quickly swarming the field with her low-attack Aquaactress monsters, which are fish-type monsters named after tropical freshwater fish like Guppy, Tetra, and Arowana. The true strength of her deck lies in her Aquarium Continuous Spell Cards, which provide powerful support by protecting her monsters, granting them attack boosts, and even allowing them to double their attack points during battle. Her Aquarium cards also have a secondary effect that lets her revive an Aqua monster from her Graveyard when they are sent there. This combination allows her to compensate for the low base attack of her monsters and control the flow of the duel.