TV-Series
Description
Astraea Libra is a student at the magic academy that serves as the primary setting for the narrative. He is the only son of the researcher Zuben J. Libra. His given name and family name carry a symbolic weight, as in Greek mythology, Astraea is the goddess of justice whose scales became the constellation Libra, a theme of balance that resonates with his distinct worldview.

In terms of appearance and basic attributes, Astraea has a height of 176 centimeters, a blood type of B, and a birthday on September 23rd, making his astrological sign Libra. He practices a unique form of sorcery known as Heart Magic.

Personality is the most defining aspect of Astraea Libra. He is openly characterized as a playboy and a soft-hearted flirt who is very fond of women. However, his attraction is not merely superficial. Due to the influence of his magic, he possesses the ability to see auras or invisible fields surrounding people. Consequently, he perceives the world through a lens of moral clarity: those with pure hearts radiate beautiful colors, while those who are wicked appear muddy and unpleasant. This ability dictates his social interactions; he will reject a beautiful woman with an ugly personality just as easily as he will fall for an elderly woman with a beautiful spirit, granting him a very wide range of romantic interests. Despite his reputation as a philanderer, he behaves in a gentlemanly manner, has high social skills, and is actually quite devoted once his interest is caught. He also has a peculiar fondness for bones, being identified as a bone enthusiast.

Regarding his background and motivations, Astraea experienced a period of conflict with his father during middle school, leading him to attend a regular, non-magical school rather than a preparatory academy. His decision to finally enroll in Diana Academy, the main setting of the story, was motivated by the knowledge that the school has a high population of female students. His role in the larger story is as a supporting cast member and a fellow student within this magical classroom, interacting with the protagonist, Spica Virgo, and other characters representing the zodiac.

His development throughout the series, as well as specific details regarding his key relationships with characters like the protagonist or the black cat Claude Sirius, are not documented in the available material. While his notable ability to see auras is clearly defined, any growth or change in this power over time is not recorded. Astraea remains a distinct figure within the academy, defined by the contrast between his flirtatious demeanor and his deeply principled, almost judicial, way of seeing the true nature of those around him.