The Rising of the Shield Hero Volume 12

After Rishia becomes the newest member of Naofumi's party, they set out to begin a unique type of training in hopes of growing stronger. But just as they're getting started, Naofumi receives a request from the queen—mysterious monsters have begun to appear and she wants him to take care of them! Will Naofumi and his party be able to handle these new threats, or will they be overwhelmed by the mysterious monsters?