Living in Spring

"Cruel Spring" has come. All human beings have had to keep moving forever. If you stop, you become a 'Sacrifice' that will never move. No one can overcome one's fatigue. Then no one would be able to keep being human. But the boy and the girl continue to walk through such a world together. Each of them has a body that can move eternally, and a journey goes on forever. It feels like a happy changeless, but the world asks about its eternity. Let's go on forever, and to anywhere. Until two answers are gifted to the world...