OVA
Description
Asuha Tōhara, originally named Asuhariet Ygvar, is a central figure known for being the ten-year-old daughter of the human Naoya Tōhara and Queen Mercelída of Ygvarland. This heritage makes her a unique hybrid of human and succubus. Raised in the human world by her father from the age of three after being entrusted to his care, she grew up believing her mother was deceased. This period of her life was marked by poverty, but it also forged an exceptionally strong emotional bond between father and daughter. Her succubus traits remained latent until later childhood, when exposure to the Dvergur Miraculous Spring stimulated their growth, leading to the development of wings, though she notably does not have a tail. Physically, she resembles her father more than her mother, possessing dark blue eyes and long blue hair, and stands 137 cm tall.

Asuha's personality is defined by her energetic, outspoken, and friendly nature, though she often acts impulsively without fully considering the consequences. An inherited succubus trait causes a strong aversion to wearing underwear, which creates recurring, lighthearted tension with her father. Her uninhibited and relaxed behavior stands in stark contrast to the reserved and more formal personality of her half-sister, Princess Astarotte Ygvar, whom everyone calls Lotte. Despite her kind intentions, her impulsive actions can sometimes cause trouble, but she genuinely means well. She is also known for giving her close friend Ingrid Sorvieg the nickname Ini.

Within the story, Asuha's primary role is as a bridge between the human world and the magical realm of Ygvarland, and as a catalyst for emotional growth in those around her. Upon arriving in Ygvarland, she quickly befriends Princess Astarotte, becoming her very first friend and companion. Although she is unaware of their true biological connection for a significant period, the two share a close sisterly dynamic, with Asuha often acting as an older sister figure, calling Astarotte Hime-chan (Princess). Her key relationships are central to her identity. She shares a deeply affectionate bond with her father, Naoya, who views her as his reason for living. The revelation of her true lineage, that Queen Mercelída is her mother and Astarotte is her younger half-sister, is a pivotal moment in her development. The circumstances of this revelation differ across adaptations: in the manga, she learns the truth after her wings manifest, while in the anime, she is aware of her heritage from an early stage but keeps it confidential. Her journey is one of navigating secrecy, seeking familial acceptance, and reconciling her human upbringing with her emerging succubus identity. As the first of Queen Mercelída's daughters to grow wings, her existence and development force those around her to confront hidden truths and reconsider their relationships.

In terms of notable abilities, Asuha's hybrid nature grants her unique potential. As the daughter of an incubus (her father is of incubus descent), she may possess the powers of a succubus without their typical weaknesses, potentially making her a purer form of the species. Her abilities are primarily latent, triggered by the Dvergur Miraculous Spring, which allowed her to manifest her wings. She is also shown to possess the classic succubus trait of an aversion to clothing, specifically underwear, which is an inherent part of her biology. While not a full succubus, her natural, uninhibited demeanor makes her in some ways more attuned to that heritage than her sister, as seen when she can wear embarrassing clothes without any issue.