OVA
Description
Catue Dragundaala is the first princess of Dragundalla, born to Queen Nina and King Lawrence. She serves as a dragon knight in the kingdom's forces. Absent during the demon Guignol's invasion, she returned to find the castle ruined and overrun by monsters. After rescuing her best friend and lady-in-waiting, Anna, from a dragon attack, Catue confronted Guignol directly but was defeated. Facing death, she accepted his challenge: complete every order he issues over seven days in exchange for her kingdom's freedom, the reversal of dragon transformations inflicted on her people, and the withdrawal of the monster army. This agreement forced her compliance while she bided time for an opportunity to assassinate Guignol.

Physically, Catue possesses gray hair, typically styled in braided odango, and green eyes. She stands 156 cm tall with a slim build, measurements of 88 cm (bust), 54 cm (waist), and 83 cm (hips). Her attire frequently combines armor elements like gauntlets and spaulders with a strapless leotard or mini-dress exposing cleavage, thigh-high stockings, court shoes, and a crown. She wields her family's ancestral greatsword, nearly matching her stature.

Her capabilities as a dragon knight demonstrate significant combat proficiency, enabling her to defeat monsters vastly exceeding her size. While her fiancé and fellow knight, Jin Hemry, is cited as potentially superior in skill, Jin frequently appears captured or distressed during the narrative, leaving Catue's effectiveness more consistently demonstrated.

Character development diverges significantly between the original visual novel and the anime adaptation. In the visual novel's Golden Ending, Catue kills Guignol, rescues Jin, restores her kingdom, and achieves a Happily Married outcome with Jin. Alternate routes include Bad Endings where failure against Guignol transforms her into a Cute Monster Girl—retaining a mostly human appearance with dragon-like horns and tail due to recessive genetics—and subsequent descent into villainy, including one ending depicting her leading the monster army while visibly pregnant.

The anime adaptation presents a consistently tragic trajectory. Key events include her unwitting patricide—slaying a dragon later revealed to be her transformed father—and her ultimate failure to satisfy Guignol's challenge. As punishment, she undergoes partial dragon transformation and is condemned to eternal servitude as a sex slave for the monster army and Jin, transformed into a feral dragon. A bonus OVA episode culminates in her enduring a screaming birth while delivering a dragon/human hybrid offspring.

Additional narrative elements involve her mother, Nina. Following mind-altering trauma inflicted by Guignol, Nina assaults multiple characters, including Catue, resulting in parental incest. This act contributes to Catue's psychological torment, particularly within the anime's continuity.