Mortal Mission - Extraordinary Game

Isn't it? He is a powerless, colorless and wealthless person who has neither had any accidents nor harmed anyone, let alone an ordinary person who is obsessed with games or has received some mysterious object. How can he actually travel through time? Why did this cat choose him? "As a mortal, what great mission can I still accomplish?" He murmured to himself. At this time, a voice that only appeared in dreams came from the sky: "Congratulations on triggering the keyword - mortal mission." Concept: Just a mediocre game with a little bit of whimsy.