The JK Space-Time Administration invents a wish-granting machine.
Then it sends the machine into anime worlds to gain practical experience.
Wish Machine: What is your wish?
A certain shady doctor: I want to protect Yokohama.
Ending: Yokohama is nuked into peace, and Mori Ogai's reputation is ruined.
A certain Master: I want to defeat Muzan.
Ending: Muzan is so scared he never dares show up again.
A certain future Seventh Hokage: I want to bring Sasuke back.
Ending: Two Sasukes, and the Seventh Hokage dies.
Wish Machine: Humans are so interesting :)
Theme: Striving to fulfill other people's dreams
Hhhhh Yes, child labor is illegal