An original video animation (OVA) episode was included on the seventh Blu-ray/DVD volume released on July 24, 2015.
A special episode premiered on October 11, 2019 on the Infinite YouTube channel.
A manga adaptation, written by Naoki Hisaya and illustrated by Yuka Namisaki, was serialized in ASCII Media Works' Dengeki Daioh magazine between the October 2014 and March 2015 issues with the series left unfinished. It was later reported in the December 2015 issue that the serialization had ended due to circumstances with the author. One tankobon volume was released on October 27, 2014.