She Hired A Guard. He Owns The Night

"When the Blood Moon Legion breached the presidential palace, I crushed the forbidden crystal core under the name of Night Council Sovereign. Yet, due to a phone call from my mother bugging me to go on a date, I returned to Vesta City to experience ordinary life. On the meeting day, I was rejected for having no car, no house, and a meager income. However, the icy-faced CEO Erena handed me a contract, hiring me as her fake boyfriend to help her escape her family's arranged billion-dollar marriage. Everyone thought I was a guy who lives off woman — until our contract leaked at the gala, where the Night council Corps knelt to greet me, heir to the Obsidian Throne."