One soul, two twins, the other half is Bronya

"Is this...quantum adaptability?"
"Bronya is an imaginary number."
After passing through the failed world, Bai Ye and Bronya drifted in the boundless dimensional sea and finally came to a "leaf".
——They are living in a pre-civilization!
Emmm… Let’s set some small goals first:
Be a Riddler to Kevin. (White)
Collect Brother Jie's masks.
Listen to a concert of Eden. (White)
By the way, spread some love to Eden.
Earn cat money. (White)
And...
……
Try to save the flawless man, Klein. (White)
Of course, there are Seele, Himiko, and Ling as well, if you can, try to help them too. (Duck)
Finally, no happy ending in the underworld! None of the thirteen heroes chasing the fire can be missing! (Together)
……
◆Introduction: This is the second edition
According to the plan, it will start from the Fallen Knight - Pre-Honkai Impact 3rd Civilization - Type-Moon - Bloodthirsty Strike - To be determined