The Wrong Way to Use Healing Magic Novel Volume 3 features story by Kurokata.

Usato and his friends have arrived at the Wizardry City of Luqvist, a place known for discriminating against its inhabitants based on their magical affinity. Usato meets a young healer, Nack, and discovers that he is bullied for no other reason than his healing magic. Nack’s story enrages Usato, and Suzune proposes a contest: Nack versus the leader of the bullies, Mina. To save Nack and defend the honor of healers, Usato makes a bold decision—he’s going to teach Nack the Rescue Team training method!