*English is not my first language and this is also my first novel.*
I will use " " when they talk and
I will use ' ' for thinking in mind
There will be grammar error because i don't have editor.
And this is Au that i imagine so there will be a lot of different in personality in some character
No harem
His world is mash up world and gonna be introduce properly after the demon slayer world arc is finish .
And the about the system is gonna be proparly explain in later character
And yes this is orginal fanfic not translation