Seirei Gensouki Spirit Chronicles Omnibus Novel Volume 04

"Rio emerges on center stage and is overwhelmed by a chain of encounters! After discovering Liselotte's party being attacked by a huge swarm of monsters controlled by none other than Reiss, Rio charges into battle. His immense power as he eliminates the enemies one by one leaves everyone present awestruck and intrigued. Meanwhile, preoccupied by her suspicions of Rio's true identity, Miharu approaches a certain someone with a question!"