[Infinite Multidimensional Space] (Original World View) + [Single Female Protagonist]
In the infinite multi-dimensional space, news of the death of a true immortal soul spread like wildfire. It is said that before his death, he delineated tens of thousands of dimensions, countless lines of reality and possible universes, making the vast realm a dojo for his return from death after enlightenment.
"Number A5463, named Li Nian, studied at Yinzhou No. 1 Middle School and experienced the A5 demon awakening incident on the day of the college entrance examination, and later recuperated in Yinzhou Mental Sanatorium."
A5463 states it more correctly according to our requirements.
Even if this experience has nothing to do with him, because Yinzhou No. 1 Middle School does not exist in this world.
"So, second question, do you feel lonely?"
"..."
"What exactly do you desire? Return to the ruins."
…
"When you come back, all the gods in the sky will host a banquet for you."
A bit tasteless,