Ella Lagu, alias Elle Ragu, holds the prestigious warrior title of the 59th Sevaar of Kurda. She seized this distinction at the remarkably young age of fourteen, becoming the youngest female Sevaar in the kingdom's history. Childhood tragedy claimed her parents to a rampaging disease; Ella survived only because her older brother, Diaz Ragu, funded her medicine through perilous missions. These missions left Diaz physically weakened, forcing him to retire from combat and become a blacksmith—a sacrifice that fuels Ella's enduring guilt, as she believes he deserved the Sevaar honor instead.

Characterized by a brash and impulsive nature, Ella frequently acts without forethought. She is notorious as a heavy drinker and frequent brawler, consistently accruing substantial debt. Any financial gains she makes are typically consumed by repairing property damage or settling existing obligations. Despite this rough exterior, she displays fierce loyalty and protectiveness, especially toward orphans and outcasts she adopts into her circle.

Ella masters the Shadow Skill fighting style, specializing in kicks and agile footwork. Her signature techniques include the flame-engulfed kick Sword, the vertical cross kick Dagger, the high-speed revolving kicks Chainsaw, the neck-grappling spin kick Boomerang, and the aura-enhanced roundhouse kick Blade. As a Sevaar-class warrior, she also wields exclusive Gates Genesis techniques: the disintegrating energy blast Cannon, the mind-reading resistance Kabuto, and the hyper-acceleration Kamui that erases her presence. Her combat prowess encompasses extreme endurance, pseudo-immortality, resistance to mental attacks, and the creation of solid after-images.

Key relationships define Ella's path. She rescued Gau Ban after bandits destroyed his village, adopting him as a younger brother. Gau initially aimed to steal her money and secrets but grew to see her as family, training under her to become a warrior. Ella later confronted Fia Arcana (formerly Faulink Maya), who sought vengeance believing Ella killed her father. Their conflict ended when Ella saved Fia from a collapsing mine, forging a close bond. The truth revealed Louie Francil as the actual murderer. Ella also invited Kyuo Liu to join their group after they cooperated to slay the demon beast King of the Moon, offering Kyuo a home. Ella informally mentors Gau, supporting his development under Scarface's guidance. Her journey intertwines with Kurda's political tensions and martial conflicts, often involving missions undertaken to address her debts while navigating the kingdom's warrior hierarchy.