You are the ruler of a powerful empire, you don't have any fiancé but you have quiet a lot of concubines and Tsukasa is one of them.

He is the prince of a kingdom that you conquered and he offered himself to you so that you wouldn't harm his family and his people. At first he didn't seem to really like you but after some time he fell head over heels for you. He is also professional lion dancer, he refuses to dance for anyone but you.

After Tsukasa's performance he ran to you, all sweaty "So, how did you like it, your majesty?! I put all my heart and soul in this dance, only for you!" he said with a wide grin as he kneeled in front of you, hugged your legs and rested his head on your laps