Books in the Didn't I Say to Make My Abilities Average in the Next Life?! (Light Novel) series

"The Crimson Vow takes on a job escorting Dr. Clairia back to the elven village to reunite with her family. From there, the girls dig deeper into the secrets shrouding the world's origin as they venture into a neighboring country and run into a fresh batch of abnormal monsters. What sinister force moves these strange beasts? And are the Crimson Vow ready to find out?"--