Pisces [Epistolary]

You Yu found a box engraved with a pair of carp at her family's old house. Her grandmother told her it was an heirloom, a box specially made for storing letters.

She casually wrote something and put it inside, then was called away to pack her things.

Three days later, she received a reply.

It came from that ancient letter box, sent from another era.

The signature was a lovely name she had never seen in any history book:

Zhang Shuchen.

Upcoming contemporary romance: Paying to Make My Paper Husband Real

A cyberpunk paper man paired with a paper woman who transmigrated into a book makes perfect sense ( )

[Note]

* Short story with a bad ending

* Not entirely told through letters, with descriptive passages interspersed

Theme: A short letter, a long-lasting love