I'm assuming that the mark is what the knives are drawn to, but what could be propelling the knives? How do they stay afloat in midair? How do they have enough force to kill someone? Lots of questions, and the devil will answer for us.
Fooly I dunno if you're a fucking idiot or the bravest man in the world. Most likely both.
A shame he isn't an assassin. An assassin who can get close enough to his enemy to feel their abs whenever he wants would be absolutely unstoppable.
I thought I was reading another manga, so I got super confused until I reached the last panel and remembered what I was reading. Time to reread I guess