Following the ending of the original work, it's probably about Shion's waiting and the mouse's return.
It's the original style, it's a style I haven't tried, but I'll try my best. Although some people say that the mouse left in the end was a bit heartless, but I believe that the mouse will definitely come back, because that is his promise to Ziyon. Therefore, it will definitely be fulfilled!
Ps: Fandom is originally a secondary creation, so it is impossible for everyone to have the same understanding.
Conception: