The truth that the girl without the past is looking for; the hope that the boy without the future is pursuing——
"This is the vow I made. I will definitely leave here and go to the outside world."
He stole the key to light, but opened the door to darkness.
Girl who has fallen into the abyss, please grasp the outstretched hand with all your strength!
We will survive together.
We will find the truth.
We need to melt away all the sadness.
People with super powers hidden in the cities, please move forward with all your strength!
Move forward in the direction of hope!