Koi Suru Otome to Shugo no Tate: Bara no Seibo

Because of his success in the events at St. Theresia Academy, Kisaragi Shuuji (Shield 9) has obtained a firm position within Aegis. That is, as the one in charge of “Crossdress infiltration”.

Since the previous events, he has successfully completed several more assignments, and currently considers stepping down from the position. Unfortunately for him, however, he has been tasked with just 1 more assignment. This time, his task involves another all-girls school similar to St. Theresia Academy.