After regain her memories, Li Hua gained a new power given from her mother to cross dimensions and traveled the worlds. After a few worlds, she ended up in a new world called Netherworld, a world filled with demons. Li Hua is talented and unique yet mysterious adventurer at Netherworld. One by one, she continued make amazing discoveries of the world and make her name. So, when Li Hua is offered to be a guest in the Babyls demon school to share her experiences, she gladly accepted it because she loves kids. When honor student Iruma enrolls, she immediately discover his biggest secret but don't worry she won't expose it. I mean why would she do that, she herself is a human after all. So this fanfiction is inspired by another story I read and it was so good....It's called 'Half Blood Sensei' by Nyantsume101. Most of WTSD fanfiction is based on the OC or Reader as students but his/her OC is a teacher. It was very different from the others and I think it's one of the factors why I love it.