He was once such a gentle person, but now he has become the person he least wants to be... Is it punishment? A person who obviously hates killing has become a demon who has killed countless people... Why? Why is this happening?
Let's start from the beginning. She thought so. Since you can't go back, since you can't meet again, let's start over.
"Zhenyue Rei... What a good name."
"Hey, can I call you Zero?"
"Zero... No! You are not him!"
"Yeah, I remembered everything."
"Together, like before."
"Let's live together. This time, we won't let go first."