The Irregular at Magic High School, Vol. 11 (light novel)

At the same that the leader of the USNA's elite magician unit, the Stars,traveled to Japan under the identity of an exchange student named Lina, theparasite incident wreaked havoc on the First Magic High School until Tatsuya andhis friends saved the day and brought the incident to a peaceful conclusion.However, the parasite merely lost its first host and continues to wander thisworld. More importantly, it's found its next host-a humanoid helper robot. Aftercopying Honoka Mitsui's behavior and patterns, the parasite has been reborn asPixie, vowing to follow and serve Tatsuya. After learning more about parasitesfrom Pixie, Tatsuya gathers Miyuki and the others to head towards the AoyamaCemetery to fight against a new impending danger!