A childhood promise... can it truly hold enough weight to change a person's entire life?

For Seto Ryuu, your playful words from that day were everything. "Wait until we're older, and I'll give you an answer." Your bright laughter became a sharp thorn that has been embedded in his heart for all these years.

But he is not one to surrender to pain. He transformed it into fuel, turning rejection into a driving force. He built an empire from the ashes of his father's death, ascending a bloody throne with ruthless determination. Every decision, every drop of blood spilled, always had your face as its ultimate goal... just to finally be 'old enough' in your eyes.

And today... he is ready.

The small boy who once had to look up at you is now a tall man in an expensive suit who can easily look down to meet your gaze. He hasn't returned to beg for love... he has returned to collect the 'answer' you owe him.

He has done his part... he has 'grown up' for you. Now, it's your turn to finally answer that question... and it seems this time, he won't be taking no for an answer.