Voice: Tasuku Hatanaka

A first-year in high school who is aiming to become a light novel author. He started writing after getting obsessed with light novels in middle school, but he's never been able to get past the first round of judging in any contests. Despite being a very caring brother to his little sister, he has no idea what "little sister moe" is. He ends up using the name Chikai Towano in place of Suzuka.

Voice: Reina Kondo

Yu's little sister. She is the student body president at Shirozakura Academy for Girls, a famous school for high-class ladies. She's a perfect girl who's gorgeous, has great grades, and is impeccable when it comes to housework. She appears to be very cold toward her brother, but in fact, she loves him more than anything. As a result, she ends up writing the award-winning novel "I Love My Big Brother So Much That I Can't Get Him Off My Mind."

Voice: Yui Ogura

Yu's classmate who is actually the popular light novelist Homura Enryu, whom Yu is a huge fan of. She's gorgeous and is very prideful, but is in fact enamored with the works of Chikai Towano. She starts to poke her nose into Yu's private life in order to discover the secret behind his talent as a writer.

Voice: Chinatsu Akasaki

An illustrator from England who is in charge of the art in Chikai Towano's works. She's a beautiful, busty, bespectacled woman who loves erotica, and she can't help talking about it. Her favorite sub-genres include rough and humiliation erotica.

Voice: Kazusa Aranami

A talented newbie voice actress who was chosen to play the main lead in a work for her debut role. Her acting, looks, and voice leave no room for complaints. She loves Chikai Towano's works, and it's her dream to play the little sister character that appears in the author's books. She calls Yu her big brother in order to try to be like his little sister, but she's actually quite a few years older than him.