OVA
Description
Milim Nava stands as the sole known Dragonoid, one of the oldest and most potent beings, often titled "Destroyer" or "Destruction." She holds the second seat among the Octagram Demon Lords. Her typical form resembles a 14-15-year-old human girl with platinum-pink twin-tails and blue eyes, clad in a revealing swimsuit-like outfit with thigh-high socks, though recent modifications added a longer top and skirt. Her true form reveals draconic traits: a crimson horn, large wings, and jet-black armor.

Born over two millennia ago to the True Dragon Veldanava and human Lucia Nasca, Milim inherited vast power. Tragedy marked her youth: her parents died early, leaving her with no memory of their faces. Her only companion was Gaia, a dragon created by Veldanava. Following Gaia's death during an invasion targeting her power, Milim unleashed her rage, annihilating the aggressor nation and awakening as a True Demon Lord during the Harvest Festival. This event revived Gaia as the corrupted Chaos Dragon, whom she later sealed. Her rampage threatened global destruction until Guy Crimson intervened, fighting her to a standstill over seven days. Ramiris eventually pacified her, and the trio established the original Demon Lord council.

Initially jaded and isolated by her longevity and power, Milim avoided deep connections. She governed the Forgotten Dragon City, where the Dragon Faithful worshipped her, though she delegated rule to priests like Hermes and Middray. Seeking challengers to alleviate boredom, she supported strong individuals joining the Demon Lord council. A pivotal shift occurred upon meeting Rimuru Tempest. After an initial conflict resolved by Rimuru's offer of honey, they formed an inseparable bond. Rimuru's gift of Dragon Knuckles—gauntlets suppressing her strength to 10%—allows safe sparring and everyday activities. She frequently visits Rimuru's nation, participating in dungeon games and cultural events, and aided in labyrinth construction.

Milim's personality blends energetic, childlike exuberance with strategic intelligence. She openly disregards formalities, acts impulsively, and seeks novelty to combat boredom. Though seemingly brash, she meticulously observes situations and controls her emotions when necessary, as shown when feigning manipulation by Clayman to expose his schemes. She despises insults or gossip and reacts violently to perceived slights. Deeply loyal, she protects friends fiercely, notably aiding Rimuru during the Walpurgis Banquet to dismantle Clayman's conspiracy. Her relationships include subordinates Frey and Carrion, acquired after Clayman's defeat, and her uncle Veldora Tempest, a gaming companion.

Her abilities stem from draconic heritage and Ultimate Skills. Key powers encompass Analytical Perception via Dragon Eyes seeing through deception, measuring magicules, and analyzing abilities, plus Dragon Ears detecting distant sounds; the intrinsic Magicule Breeder Reactor generating infinite magicules and enabling "Stardust" energy manipulation; Ultimate Skills "Wrathful King Satanael" and "Blazing Sun Lord Amaterasu" maintaining self-control in battle; Combat Techniques like city-destroying "Drago Buster," country-level "Drago Nova," and the globally threatening berserk state "Stampede"; Multi-layered barriers negating most attacks and mental interference; and Spatial Magic enabling teleportation and large-scale relocation, such as moving the Forgotten Dragon City.

Across her journey, Milim evolves from a solitary figure of catastrophe to a connected guardian. She reconciles with Gaia after its soul revives in a new form through Rimuru's assistance. Engagement with Rimuru's community softens her destructive impulses, emphasizing camaraderie over isolation. Despite growth, she retains core traits like neglecting duties to pursue fun and an aversion to vegetables—particularly raw offerings from worshippers—while adoring honey and sweets.