Saving an S-Rank SentinelUpdated at Aug 21, 2026, 05:43
Mia was once an S-rank Guide, but after a mysterious accident, her rank fell to A. Now, she is the best therapist at the Mental Treatment Center. Leon is the youngest S-rank Sentinel in the Federation and the captain of the North Wind Squad. During a classified mission, he overused his mental power to protect his teammates, causing his mental world to completely collapse. He lost his sanity and became a “monster” that could only attack every living thing around him. Even S-rank Guides have failed to cure Leon, yet the military has placed its last hope in Mia. Can an A-rank Guide really save an S-rank Sentinel? But why does Leon look at Mia more and more like she is his prey?