Eromanga Sensei

"Eromanga Sensei" (エロマンガ先生) is a Japanese light novel series written by Tsukasa Fushimi and illustrated by Hiro Kanzaki. The story revolves around Masamune Izumi, a high school student and light novel author, and his reclusive stepsister, Sagiri Izumi. Masamune works with an anonymous illustrator known as "Eromanga Sensei", only to discover that it's his own sister, Sagiri, a popular artist online known for her erotic drawings. The series follows the siblings as they navigate the challenges of the light novel industry and their evolving relationship. They also grapple with keeping Sagiri's identity a secret and striving for success. "Eromanga Sensei" is known for its unique sibling dynamic, humorous plot, and detailed artwork, and has been adapted into manga and anime.