When he was eighteen years old, the orphan Su Nian was bound by a being who called himself the "Three Thousand Realms System".
The system said it was injured and needed energy recovery. Where does the energy come from? Go to various worlds to make transactions - exchange items with cause and effect for energy.
A stone, a fallen leaf, an old pocket watch - as long as it carries memories, it has value.
Su Nian agreed.
From then on, she became a trader traveling through the Three Thousand Worlds. The father who accompanies the little girl in the fishing village while waiting to go to sea, helps the old woman in the snowy mountains to find her sister who has been missing for seventy years, and listens to a scrapped robot talking about its little master in the future city.
Every time she goes to a world, she makes friends, listens to stories, collects things, and then leaves.
She thought she was just a passerby, helping the system heal and taking in the scenery.
But what she didn't know was that the damage to her system had long since healed.
It just never told her: the day when the energy is fully charged, the Three Thousand Worlds will be restarted. All worlds return to zero, and all life disappears, including her.
And those causes and effects she carefully collected will become the seeds of a new world.
——She thought she was a trader.
Little did he know that she was also the only collection in this reboot.
