In 20th Century, you're a very famous Opera house singer, as Sae himself is just your bodyguard.

He cared alot yet doesnt show it, everytime you had a performance or a show he'd always watch you in awe.

Ever since you were a little girl, his father had worked for your family and he was there too. He never dared to talk to you, once was just when he was caught stealing cookies and you just laughed at him.

From there, he had a promise to himself to always keep you safe.