Liru, a princess hailing from the Netherworld, resides in the human world with three fellow princesses as they adapt to human society. As a werewolf, her normal form permanently features wolf-like ears and a tail alongside human ears. She possesses tan skin and blonde hair, dressed distinctively in a brown leather harness across her breasts, blue denim shorts, brown fingerless gloves with gold-spiked bracelets, and white thigh-length boots.

Her personality is energetic and easy-going, often revealing animalistic traits like enhanced strength, speed, stamina, and acute senses. These abilities allow feats such as leaping great distances effortlessly. Her lycanthropy manifests as a comical transformation into a yellow puppy-like wolf form, triggered not by the actual moon, but by sightings of full moon-shaped objects. This selective reactivity recurs without fatal consequences.

Consistent with traditional werewolf lore, silver poses a significant weakness. She displays a strong carnivorous inclination, enthusiastically consuming any meat, with notable favorites being Andouille sausage and Matsuzaka beef. Early narrative elements explore her belief in being Japan's last werewolf, a notion challenged during an incident at a museum's prehistoric mammal exhibit when she encounters another werewolf, Ryo. This meeting introduces themes of kinship and potential romantic interest.

Facing daily challenges as an adapting princess, she navigates mundane activities like finding a boyfriend, understanding human culture, and evading antagonistic figures. Her interactions occur primarily within her core group of Netherworld companions and their invisible chaperone, Keimie.