Nick Brown is an ordinary human boy. Until one day, he finds himself sold to one of the Seven Great Demon Lords. But, instead of being tormented for eternity, Nick finds himself....adopted by the Demon Lord as his grandson. Now, Nick gets enrolled into a school in the Underworld.

Disclaimer: I do not own Welcome to Demon School! Iruma, nor any characters in this story, minus Nick. I will also be using character from Hazbin Hotel, Helluva Boss, High School DxD, and/or other shows with Demon characters.

Welcome to Demon School! Nick