The Nameless Hunter is a Sub Character

I honed my strength, hoping to be of help to my friend whom I had a crush on. After desperately enduring, I quit the guild I was in, feeling like I wouldn't be a hindrance anymore, and applied to the association. However, my friend, upon hearing the news, became sulky. "How long are you going to sulk?" "...Until today." "Why specifically until today? Unwind now." "...Because today is the prologue." What? "The main story starts tomorrow." More nonsense. My childhood friend, Lee Riwon, who is known as the strongest in Korea, sometimes spouted nonsense. He had often done so since we were young, so I could just brush it off as usual. That's what I thought... Recently, Lee Riwon has been acti...