However, one day, reality comes and smacks Masamune right in the face. His popular light novel’s illustrator, Ero Manga Sensei, is actually none other than his hikikomori step-sister!

They have been living under the same roof. His cute, hikikomori step-sister, under a strange pseudonym has been drawing all of his perverted and ecchi illustrations!?

Masamune Izumi

Voice Actor: Yoshitsugu Matsuoka

Masamune is a normal high school student who at the same time is working as an author for a light novel. His pseudonym uses katakana to hide his actual name. He is the type to not search his works nor pseudonym online. He has a hikikomori step-sister.

Sagiri Izumi

Voice Actor: Akane Fujita

Sagiri is Masamune’s non-blood related younger sister. She is really bad as a hikikomori, so if people are in the house, she will not leave her room. She illustrated under the pseudonym ‘Ero Manga Sensei.’ She really likes drawing perverted and ecchi images.

Elf Yamada

Voice Actor: Minami Takahashi

Elf is a writer who is working with a company separate from Masamune and is making a killing in sales. Her nickname is ‘Greater Novelist.’ She is really good at writing slightly perverted and ecchi novels so she is fascinated with Ero Manga Sensei’s illustrations.

Muramasa Senju

Voice Actor: Saori Oonishi

Senjuu is a writer who works for the same company as Masamune and is actually his senpai. She’s a giant fan of Masamune’s works and before he made it as a professional writer, she has saved all of his pre-debut novels that he has released online.

Amelia Armeria

Voice Actor: TBA

Amelia is the illustrator in charge of illustrating all of Elf Yamada’s works. She is not only interested in illustrations since she has many irons in the fire as she dabbles in manga and movies herself.

Megumi Jinno

Voice Actor: Yui Ishikawa

Megumi is Sagiri’s classmate. She’s the student body council present who is extremely effective in interpersonal relations. She loves to make friends, so she tried earnestly. She is Sagiri’s natural enemy.