Recently, there have been a large number of kidnapping cases in Edo, and it was found that they were committed by time-traveling heavenly beings. In order to achieve the time travel target and collect money to celebrate the launch of "Three Years Z Team Ginpachi Sensei", they kidnapped ordinary citizens of Edo by any means, and abducted the citizens into the companion derivative world of Derived Celestial beings to collect energy similar to dragon veins to maintain the operation of the traveling Celestial Being home planet.
These abducted ordinary citizens are generally dissatisfied with their daily lives and look forward to an exciting life, and the time-travelers use this to lure and kidnap them. They were given special abilities beyond the derivative world and large-scale mental pollution capabilities by the time-traveling beings in order to efficiently destroy the world view of the derivative world.
The Derivatives call these travelers who passively invade and destroy the Derivative World "Mary Sues" regardless of gender.
The Gintama Master House trio was entrusted by the derivative heavenly beings from the derivative planets. They will go to the worlds owned by these derivative heavenly beings to help find and return these kidnapped "Mary Sues".
*It seems to be anti-Soviet, but it is not
*Gintama has no cp, other official versions are available
Currently, they are tentatively designated as a detective derivative Celestial Being (Detective Conan), a spell derivative Celestial Being (Spell Reborn), a supernatural being derivative Celestial Being (Bungou Stray Dogs), and a **** derivative Celestial Being (Tutor Reborn).
Mission: Friendship, hard work, victory