Eromanga Sensei is returning in 2018 with a brand new OVA. The project was announced at the “Eromanga Fes” live event. No other details, such as if it’s an original story or a chapter adaptation, were announced.
— 俺妹&エロマンガ先生 (@oreimo_eromanga) November 12, 2017
Eromanga Sensei was created by writer Tsukasa Fushimi and artist Hiro Kanzaki, the same duo behind Oreimo: My Little Sister Can’t Be This Cute.
The “sibling rom-com” follows the light novel careers of Masamune Izumi and his step-sister Sagiri Izumi. Masamune has spent most of his career working with a perverted artist called Eromanga Sensei but has never met them in person. One day, he accidentally discovers that his hikikomori step-sister is Eromanga Sensei, which complicates their strained relationship.
A 12-episode adaptation produced by A-1 Pictures aired during the Spring 2017 season, which has been one of the highest selling series this year.