This movie is the prologue of The Irregular at Magic High School. This movie shows the reason Miyuki’s relationship with Tatsuya became deep and what kind of experiments the Yotsuba’s have performed on on Tatsuya and the side effects of the experiment and what kind of reasons lead Tatsuya to join the Military. Since this is one of your favorite shows I hope you will like this movie and this will give some answers for your questions about Tatsuya and Miyuki.
