801-shiki Chūgakusei Nikki: Tonari no Hina-chan

801-shiki Chūgakusei Nikki: Tonari no Hina-chan (801式☆中学生日記～となりのひなちゃん～) is a spin off manga about 801-chan's little sister, Hina. It began serialization in Romance Tiara in April, 2009.

Plot
801-chan's little sister Hina is also a fujoshi. The manga tells the story about her school life.