In the fantasy world ruled by Matriarchy, Kael of the Ancient Moonstone House, was working as a guild receptionist. Throughout his life, he was protected by his mother and later, younger sister, who was considered one of the highest potential individuals in the Queendom of Elyria. One day, he hears that his sister has gone missing and his family has accumulated debts of over 127 million gold coins to the Bank. The Queen comes to his rescue, paying off his debts and in exchange, he has to marry her five daughters, who each excel in a domain of their own.
Having the five imperial princesses and the Queen herself as the backing, Kael has become one of the most protected individuals in the Queendom. Little did his wives know that Kael had another identity. He is the most dreaded yet noble Assassin of the imperial city, "K," one who hunts down the criminals who escape punishment either because of insufficient evidence or using their connections. 
Follow Kael's journey, as he navigates his life as the protected figure in the light and protector of justice in the shadows.

"Yes," Shiera said, calm but resolute. "During these last few weeks, I've come face to face with my weakness. I used to think my Tier-8 strength made me unstoppable. But when I faced Alice… or Azareia, whatever she called herself… I was helpless. I was defeated by a vampire in daylight in the middle of the desert. I couldn't even do anything against a Tier-8 monster."


"So? You want to break through?" Athena asked.


Shiera shook her head, "I know that simply increasing my realm is not an answer, sister. I need to unseal the powers that Lady Searvale sealed away on Mother's orders."


"The Ice?" As Athena frowned, Shiera nodded.


"He's the only one who can help me awaken those powers," Shiera replied. "Not just awaken them. I need to train, too. When I was strong enough to manipulate both fire and ice at my will, that'll be when I'll become strong."


Chapter 152 - Each to their own journey