Myoujin, Aki

明神亜貴

The primary antagonist of the first anime series, appearing in every episode. He serves as the Chief Security Guard at Maximum Security Black Wing Prison and is the captor of the protagonist, Hina Saotome.
He is a handsome young man with fair skin and a striking appearance, dressed in a jet-black, military-style uniform. A large scar runs from his right chest to his side. He possesses a seductive aura and a strict, ruthless personality.
Prior to Hina's arrival, he was a serious prison guard who showed consideration for the inmates. Even now, he is beloved by the prisoners, excluding Hina and Higa Yamato, and is highly trusted by his subordinates. He leaves the prison once every two weeks to visit his mother, who is in a coma at the hospital. He lost his father at a young age and lived with his mother, but felt lonely because she brought men over almost every day; as he grew up, he became increasingly rebellious toward her.
However, after suffering serious injuries in a motorcycle accident and receiving a large blood transfusion from his mother, he changed his perspective and felt grateful to her for risking her life to save him. He also discovered that his mother had been working hard to pay off her debts, so he swore to protect her and paid off all of them.
At that time, he moved into the home of Yuzuru Kougetsu, who had remarried his mother. The three of them lived happily together, but the company went bankrupt following a massive embezzlement case, leading him to hate Hina, who was accused of the embezzlement.
Due to his rough youth, he was skilled at fighting and handling motorcycles even before he became a security guard.