After the dispute with the Heavenly Principles came to an end, the continent of Teyvat fell into a long-awaited peace.
Zhongli, former Geo Archon and now a retired old man, decides to take a vacation.
He arrives in Inazuma to visit an old friend, only to discover that the place where Tenshukaku should be has been replaced by a place called Tokyo Metropolitan Curse Technical College.
Zhongli: By any reasonable measure, he isn't senile yet.
*
The school year hasn't even started, and the assistant supervisors are already discussing which poor soul will be assigned as the new students' homeroom teacher this year.
There are only four new students this year, but every one of them is hard to handle:
Gojo Satoru, the Gojo clan's arrogant prodigy.
Ieiri Shoko, the highly sought-after and exceptionally rare healer.
Geto Suguru, a wild sorcerer with a weird perm, baggy pants, and earrings, who looks like a delinquent.
The future godfather of the mafia in the underworld, Sawada Tsunayoshi, the Tenth Generation Boss of the Vongola, rumored to enjoy eating children raw.
Newly hired, unlucky soul, Zhongli: Meeting is fate. I suppose I'm not that unlucky.
*
"Though I have no desire to rule, I know the suffering of the people."
Zhongli stands high above, arms folded, and sighs.
A star falls, shaped like a six-channel rotating Luban lock.
In an instant, grotesque curses turn into ashen statues, their strange bodies etched with flowing golden patterns that seal them in place.
A miracle descends.
No romance. The Geo Archon shines alone (though he forms bonds with others).
Once again, it's the Great Bento-Box-Kicking Campaign. People live for happy endings.
Lots of original headcanons, and the timeline is unclear.
Message: Keep your feet on the ground while gazing at the stars.