In case you haven't read the synopsis properly.
This story is quite fast paced.
This is a system story. So, sooner or later, the mc will turn out OP.
The first 2 chapters will have the mc genderbent.
This story is a bit shorter around 200k words.
Zenin Mai is the main character.
This story will have topics of Manga. I've read upto chapter 230. So, any changes that will happen may later conflict with the story. Remember that.
There will be no romance whatsoever. I specifically chose JJK for this because it has no romance.