TV-Series
Description
Ato is the third princess of the Kingdom of Kusharundo, a fact that places her within a royal lineage, yet she rejects a conventional noble life to pursue the path of a warrior. She has a distinctly boyish appearance and uses the masculine first-person pronoun boku for herself, which initially leads many to mistake her for a young man. This tomboyish demeanor is a core part of her identity, reflecting her determination to be taken seriously as a fighter rather than an attempt to emulate men.

Personality wise, Ato is defined by a strong sense of justice and a deep loyalty to those she comes to trust. She is earnest and straightforward, often acting on her convictions without hesitation. This can manifest as stubbornness, particularly in her early pursuit of revenge, but it also fuels her unwavering support for her allies once her mind is made up. Her caring nature becomes more prominent as the story progresses, acting as a counterbalance to the darker themes surrounding her companion. Despite her tough exterior, she is sensitive about her lack of feminine physical development, a trait she shares with other characters in the series.

Ato's primary motivation shifts dramatically over the course of the narrative. Initially, she is driven by a desire for revenge against Koinzell, whom she blames for the death of her beloved brother, Klato. Consumed by grief, she dons a black outfit and a cursed crown of vengeance that enhances her strength but suppresses her mind, attacking Koinzell to avenge her sibling. However, upon learning the truth that her brother had become a mindless puppet and that Koinzell had granted him a mercy kill, her hatred transforms. From that point forward, her motivation becomes tied to Koinzell himself, seeking his approval, learning from him, and supporting him on his own quest for revenge.

In the story, Ato serves as one of Koinzell's most important allies and companions. Her role evolves from a minor antagonist to a steadfast sidekick and protégé, providing both combat support and an emotional anchor for the revenge-driven protagonist. She often acts as a foil to Koinzell, representing a more hopeful and human perspective that prevents him from being completely consumed by his dark quest. Her presence creates key turning points in the plot, particularly during a major invasion of a free city where she nearly sacrifices herself to save Koinzell.

Key relationships are central to Ato's character arc. Her bond with Koinzell is the most significant, beginning with hatred and misunderstanding but deepening into profound trust, loyalty, and a subtle undercurrent of unresolved romantic tension. Koinzell becomes her mentor, saving her life by sharing his elven blood and transforming her into a half-elf like himself, which forges a unique and powerful connection between them. Her deceased brother, Klato, also remains a crucial figure in her past, as her love for him is the initial catalyst for her entire journey.

Ato undergoes substantial development. Starting as a relatively inexperienced warrior whose rage fuels her actions, she matures into a skilled and formidable fighter. Her near-death experience and subsequent transformation into a half-elf mark a major turning point, granting her enhanced physical abilities and a new lease on life. This event also changes her appearance, as her hair temporarily turns white before reverting to black with distinctive white bangs after a time skip. She grows from a vengeful girl into a confident warrior who fights not just for revenge, but to protect her companions.

Regarding her notable abilities, Ato is a proficient magic knight, skilled in both martial and mystical combat. She is adept at wielding lances and swords, and she also uses explosive magical tags in battle. Her primary weapon of choice is a unique double-headed sword, identical to the one her brother used, which allows her to fight with a powerful dual-wielding style. After becoming a half-elf, her physical capabilities, such as strength and speed, are greatly enhanced, making her an even more dangerous combatant. She is also shown to be a capable wyvern rider, adding to her versatility as a warrior.