One day in 2840, Mu Mu came to his father's laboratory in his free time.
Because her father doesn't allow her to touch his things at will, she endures her curiosity every time. Today, she finally waited until her father was not at home and could do whatever she wanted!
She touched around to her left and found a closed space similar to a real-life game cabin. She walked in with curiosity. When she was curious, the hatch slowly closed.
"Time travel begins." As the voice sounded, Mu Mu disappeared into the warehouse.
"Who are you?" Mu Mu asked in surprise.
"I am the guide of time travel. You can call me time. During the journey, you can see different scenery and different people, but in exchange, you have to help the characters in it fulfill their wishes. Are you willing?"
"I do."
"The contract is concluded and the journey begins."