Eleven years ago, a six years old boy walked back with a girl of the same age.
"Are you sure about this?"
"Yes. For the first time in my life, I have finally found something I want to do." He smiled. "You already know about the condition of my ears, right?"
The girl looked down, feeling sad. "It must be hard, isn't it? If I were the one enduring that burden, I might have given up at one point. However, you are different than anyone I have ever seen before."
"Hehe… You are too." He smiled. "For as long as I remember, I can't find the purpose of my ears, and for what reason do I need to endure this torture. However, it starts to change when you come to this place. I feel like I am born to help you."
"Kai…"
"If you want to become the best, I will help you from behind. My ears are capable of doing that. That's why I—" Kai suddenly stopped talking as he looked to the left with a pale expression.