Yoojin is an F-ranker overshadowed by his little brother, an S-ranker. All he does is get in his brothers way, causing trouble wherever he goes. When a seemingly routine dungeon raid goes wrong and costs Yoojin his brothers life, Yoojin decides to use the

“The barrier mages job is done, right? Then, why not join the Kingdoms Royal Mage Corps?”For the last 30 years, a protective barrier shielded the kingdom from the Demon Kings forces. Initially maintained by a hundred barrier mages, their numbers dwindle