Masamune Izumi, a high school boy who also works as a light novel (young-adult fiction) author, has a younger stepsister Sagiri who is a hikikomori (a shut-in).
She became Masamune’s stepsister a year ago, and since then, she never comes out of her room.
One day, Masamune finds out that his sister was ‘Ero Manga Sensei’, the very person who draws the illustrations for his light novels. How could it be that his cute shut-in sister who lives in the same house is drawing sexy illustrations using such an indecent name?
Ero Manga Sensei is a hyper comical story woven by the light-novel-writing brother and the picture-drawing sister in the book industry!
Ero Manga Sensei written by Tsukasa Fushimi (Dengeki Bunko Kan)