Special 8 min. episodes which were included with the BD/DVD release and aired from March 28, 2018 to July 25, 2018.
- "Heya Camp Episode 0" (「へやキャン△episode0」; included with BD/DVD volume 1)[1]
- "Horror Camp" (「ほらキャン△」; included with BD/DVD volume 2)[2]
- "Survival Camp" (「サバキャン△」; included with BD/DVD volume 3)[3]