Nightingale

Nightingale is the first witch from the Witch Cooperation Association to come into contact with Roland. She is a former assassin that currently serves as Roland's personal bodyguard as well as the head of Graycastle's Security Bureau. Nightingale's real name is Veronica Gilen, which she chooses to rarely use as a rejection of her past life.Nightingale is a slender young woman with mature, charming features. Her blond hair cascades down like a waterfall. At her first meeting with Roland, she wore dark clothes with a hood, hiding her face. After joining the Witch Union, Roland gave her a set of clothing based on the white hooded cloak worn by protagonists from the Assassin's Creed game series; a private joke of his in reference to her identity as an assassin.
For sleepwear, Nightingale initially wore a nightgown in the early days of the Witch Union. She later switch to simply wearing a camisoleNightingale is a woman who follows her own personal view of right and wrong. After her grueling experience under her uncle, she decided to never cry or be afraid of what comes her way, making her a courageous and strong-willed woman.
She also has a mischievous side, pinching Roland whenever he does something she finds annoying or stealing his food without his knowledge or consent.Her battle strategic is very good,but not so much with her theory test.
She is very overprotective of Roland, and her loyalty to him is unwavering. She would gladly lay down her life to protect him. Nightingale spends most of her time eating dried fish near him and will try to always be invisible by his side whenever he is meeting with someone else. She also put a god's stone of retaliation below Roland's pillows for his safety. Roland's safety is her upmost priority, and she is prone to place blame upon herself when she fails to protect him from harm.
She is jealous of Anna's close relationship with Roland and frequently wishes that she had met Roland first.
She has very little tolerance for anyon