Irregular at Magic High School Light Novel Sc Vol 11
(W) Tsutomu Sato (A) Kana Ishida
The parasite incident wreaked havoc on the First Magic High School until Tatsuya and his friends saved the day and brought the incident to a peaceful conclusion. However, the parasite merely lost its first host and continues to wander this world. More importantly, it's found its next host-a humanoid helper robot.