Prologue : The Arrival of the Greatest

A Home is a place where people think about you. Right?
Yuri believed the same thing. So does his Elder Step-Sister..
But what about a place you hate and yet you feel obligate to protect it.

And born with a clan which was wiped out Hundred year ago with the ability to see future?
You cannot live a simple life.
And what are these feelings for his sister?