Reincarnated as a Sword (Light Novel) Vol. 20

Having saved Sophie in Cendia, Fran and Teacher head to a new battlefield under orders from the Adventurers' Guild. There, they join forces with S-Rank adventurer Izalio and Adol the Godsword Knight to save a town from being destroyed--but the appearance of several strange, giant antibodies sets off what might just be the greatest swarm Goldicia has ever witnessed. In the midst of all this chaos, a mysterious Black Cat surrounded by black lightning arrives on the scene. Who is this person? Will she prove friend, or foe?