ジャンプフェスタ
At Jump Festa 2016, it was announced that the series would get an original video animation (OVA) bundled with the limited edition of the thirteenth volume of the manga. Another OVA was bundled with a limited edition of the fourteenth volume of the manga. Another OVA was bundled with the first film's blu-ray set, and adapted its prequel manga. It was two minutes long.