While other transmigrators,
want to live as quiet and peaceful as possible, to not interrupt the story they came to, and try to change their fate,
Our female lead Park Yeon Seo was different.
 Park Yeon-Seo is a high school student in Korea who was just about to graduate from the hellish life of a senior, 
had transmigrated in the r19 ruination novel 
she was reading: Love in The Library. 
And became the extra number 13. 
the frail daughter of count visache. 
The original owner of the body had made one appearance in the novel where she visited
 the library of the female lead in the story, 
she convinced count Visache Io to go 
because it was going to be her first to 
probably the last thing she wanted to
 do before she was going to the place 
where her favorite thing comes from, BOOKS were Aurelia's favorite because she could not go outside for her body is too 
frail and fragile so she has only
 seen the world from books and
 going to the library was the thing she wanted the most and that was also the first and last time she appeared in the novel. 
Aurelia didn't want to make the people she loved sad that's why she wished to God that someone could take her place and that's where Park Yeon Seo comes in to fulfill the wishes of the late Aurelia, and Park Yeon Seo also before coming to the novel had one wish when she was in hishschool and that is to be the perfect villainess.

hishschool dxd

Miss Extra wants to be the Villainess?!