This book has nothing to do with the Paramecium on the cover. I was too lazy to draw a picture so I just found one randomly.

My name is Fan Xingyu, an ordinary office worker in the 21st century

But when I came home one day

Suddenly I felt something hit my head

When I woke up again, I found that I had become...

Don't bother me with the settings, they were broken from the beginning! ! ! ! !