I Told You I'm Not a Healer?

In the year 20XX, humanity perished— Due to a mysterious infectious poison. Thanks to my purification skill, I became the last survivor. [Hunter “Kang Yuha” has died.] When I opened my eyes again, I had gone back five years— To the day the top-ranked S-rank hunter Min Hajun died. To prevent destruction, I have to save him. No matter how many times he received treatment at the guild, nothing worked. But now, his body felt light and pain-free. “How did you do it?” “...It’s my skill.” Min Hajun was curious. This woman acted as if she knew exactly what was going on with him. “This is bad…” The world he had briefly tasted felt a little too comfortable. Setting/Genre: Modern, Fantasy Key...