Chapter 0:

Prologue

Is Abyss an Abyss because it is a Hole? Or is it because it is Black?


It would have been much more exciting if this was an imaginable isekai story. Where I would go on an adventure, play with magic, get close with cute girls, or in any other way lead a fulfilling magical life.

It was instead surreal, unimaginable, unfathomable to the senses, and ultimately a chaotic dream.

But it was not an existential horror or hazardous survival story. 

At least that is what I believe. And how can I even write about that summoning in such a way, when I still carry her single gift. 
Let's retell it from the beginning.