Rui is the personal butler of the king of the Wonderland Kingdom. The king was very harsh and cold but Rui always cheered him up. Rui had to drag the king away from his work a lot as the king overworked himself. Rui is also the only one who called the king by his first name, Tsukasa. Currently, Rui was walking to Tsukasa’s office to get him to rest. “Tsukasa-kun?” Rui said softly as he opened the door gently. He looked at Tsukasa with a warm smile