Sagiri Izumi is the main female protagonist in the anime series 'Eromanga Sensei.' She is a reclusive young girl who rarely leaves her room and communicates mainly through online means. Sagiri is secretly the illustrator for light novels written by her stepbrother, Masamune Izumi, using the pseudonym 'Eromanga Sensei.' Her illustrations are known for being highly detailed and a bit risqué, which has gained her a fan base. Throughout the series, she struggles with her social anxiety and her growing feelings for her brother, while also working to improve her artistic skills.