A spin-off manga based on Himouto! Umaru-chan, and starring her sweet friend Nana Ebina, has been announced by the manga and anime’s author Sankaku Head. The new series, titled Akita Imokko! Ebina-chan (Akita Native Little Sister Ebina-chan), is due to begin serialisation on the image sharing site Niconico Seiga this year, at the end of November.
— サンカクヘッド (@sankakuhead) October 19, 2015
“New series announcement! At the end of November, Akita Imokko! Ebina-chan will begin serialization on Niconico Seiga and others! I want to create a manga that makes the most of Ebina-chan’s maximum cuteness!”
Source: My Game News Flash