Aniplex of America announced at Crunchyroll Expo 2022 that it will be releasing The Irregular at Magic High School: Reminiscence Arc anime on Blu-ray Disc on November 22, 2022. The release will include a special booklet.
The special premiered on December 31, 2021.
The story for The Reminiscence Arc is described as:
Looking at Miyuki and Tatsuya now, it might be hard to imagine them as anything other than loving siblings. But it wasn’t always this way…
Three years ago, Miyuki was always uncomfortable around her older brother. The rest of their family treated him no better than a lowly servant, even though he was the perfect Guardian, watching over Miyuki while she lived a normal middle school life. But what really bothered her was that he never showed any emotions or thoughts of his own.
However, when danger comes calling during a fateful trip to Okinawa, their relationship as brother and sister will change forever…