In a twist of fate at Daiichi High School, a mysterious delivery of magical technology called 'Relic' from an unknown civilization sets off an unexpected chain of events. When Tatsuya Shiba stumbles upon this enigmatic artifact in the forest, he finds himself immersed in a surreal world where his sister Miyuki appears as a princess. This unconventional tale unfolds not in the usual 'magic department,' but within the realm of 'magic royalty.' As a special treat for the 10th anniversary of 'The Irregular at Magic High School,' the thrilling 'Dream Game' from the first TV anime installment is now included in a bonus novel of Dengeki Bunko, delighting fans with a fresh take on the series.