A sequel to Aki-Sora under a new name.

Unlike the main television anime series which is mostly set in modern-day Japan, the new series will be a "sealed room" suspense comedy set 100 years in the future. The story begins when Shinnosuke and the entire Nohara family wake up from cold sleep to find themselves aboard a space ship drifting in space. The anime will depict the various events that take place inside the ship. (Source: ANN)

It was officially announced at the Dengeki Game Festival 2015 event that Strike the Blood will be getting a two-episode OVA series to be released at the end of 2015. The OVA will be an original story written by Gakuto Mikumo.

Special bundled with the Blu-ray/DVD volume of Grisaia no Meikyuu.