Luna

Luna (ルナ, Runa) is a silver-haired girl from Arselia born into poverty who became a vicious killer in her fight for survival and was consequently recruited into the Guild of Darkness, an organization of professional assassins, where she became famous as The Headhunter. She is hired by the realm's first prince Reigar Von Arselia to eliminate his stepsister Lexia Von Arselia, but upon encountering Lexia's protector Yuuya Tenjou, she falls in love with him and rethinks her way of life since she is aware that the Guild of Darkness will send assassins to kill her for failing her task. Due to her failure in her mission, she was dismissed by Guild of Darkness and no longer a part of Guild. She became a personal bodyguard of her love rival, Lexia to redo her life.

Luna has extremely smooth skin, silver-blue hair of medium length (before she grows it longer to hip-length over the course of the series) that is styled in a low side ponytail where it usually rests on her left shoulder with long bangs hanging on the right side of her face, blue eyes, she is often seen with a neutral face and she has long well-toned legs from her active years of training to the extreme.

She is known to have a very professional-like look or manner and she is known to be extremely stealthy and being able to erase her presence to most individuals and has a fierce grin anytime she is in a life or death situation.

Luna is often lithe, and quiet like a wild cat, in a hostile environment.

Due to years living in cruel and unforgiving environment, Luna developed very cold and naturalistic view in order to survive. As a result she has no problem of killing people, without hesitation. Despite this she still retained morality and can show gratitude to people's kindness. With Yuuya Tenjou and Lexia Von Arselia's help, Luna begins to change and stops being an assassin, though her dark side generally crops up whenever a loved one is threaten and those who find out she used to be the Headhunter are mortified they offended her. She cherishes being brought into the Light and is extremely grateful to Yuuya and to Lexia. She does has a comedic gloomy personality trait whenever something doesn't go her way, and is fiercely embarrassed around Yuuya whenever someone brings up anything romantic.

She often suffers from Soldier Trauma, the trauma of taking another human life, but starts to accept herself slowly over the course of the series. She loves bathing and is ecstatic when she gets her own bath drop item and often uses it to discipline Lexia's outrageous demands to even the playing field. She is considered the strongest uncorrupted human native alive in her world, probably in part to Yuuya's training. She finds out that Yuuya is an Otherworlder and she has an extreme curiosity about Earth every since, until she visits it herself.

Being a war orphan who survived the streets until Luna met her master was all she ever knew. She was raised by him since to become an assassin and looks up to him as a father figure, and is shown early on despite her chosen profession she does not forsake her empathy. She is shown to be a stoic, honorable and kind individual with obvious signs of trauma and guilt, but despite that continues her profession until her fateful encounter with Yuuya Tenjou.

Luna's main weapons are wire-like threads which she can exude from her fingertips.