TV-Series
Description
Ruki, the Third Demon Lord Rchimedes, descends from a bloodline linked to the ancient Demon King imprisoned by the hero Creasion. Her story begins with a fateful mishap: attempting to pop corn in a demon-summoning pot, she unwittingly unleashes hordes of demons into the human realm—a trap set by the scheming demon Dezember. This blunder propels her into a quest for redemption, joining forces with the hero Alba and soldier Ross to recapture twelve rogue demons whose escape threatens to resurrect the primordial Demon King.

Petite in stature, Ruki sports pink hair, pointed ears, and piercing purple eyes, with a backward question-mark tattoo etched on her right forearm. She dons a white hoodie adorned with a yellow zipper, red boots, and a skull-shaped pin, often shrouding herself in a brown tarp secured by a paper clip to mask her identity. Her signature ability allows her to conjure interworld portals, though humans traversing them risk cracked ribs without protective gear. Initially, these portals function only within a 50-meter radius in the same realm.

Starting as a whimsical, childlike figure, Ruki evolves into a composed leader while retaining traces of her playful nature. Early chapters showcase her teaming with Ross to jest at Alba’s expense, yet her growth soon steers her toward stabilizing the group’s dynamics. Her past unveils a younger sister, Lym, paradoxically more mature despite her age, and a heritage steeped in demonic royalty.

Though rarely addressed by her true name, Lumière (“light” in French), Ruki’s August 27th birthday mirrors her series’ Nico Nico Douga debut date. She avoids salty flavors but indulges in sweets. The visceral rib-fracturing consequence of portal travel echoes the author’s own life events, grounding her fantastical abilities in tangible reality.

Narratively, Ruki bridges comedic misadventures and grave stakes, unraveling secrets of Creasion’s legacy and the Demon King’s origins. Her alliances with Alba and Ross anchor the story, as their collective mission confronts both her accidental chaos and deeper conspiracies entwining demonic legacies and heroic bloodlines.