MOON NOA felt it.
The moment the (potential) serial killer put their hand over his chest, he felt the opponent injecting a strange shot of Mana into his heart.
To break his Core, no doubt.
Fortunately, the "Mana bullet" hit the "coat" that was protecting his heart all this time. He felt the "coat" crack, but it succeeded in keeping his heart and Core intact.
It's the technique that Yuyu taught me a few years ago— it came in handy, huh?
"Why?" the serial killer asked, confused. "Why are you still alive?"
They sound like a male, so Esper Yang Youngjae was right.
However, it wasn't Moon Noa's job to uncover the serial killer's identity.
"Moon Noa, who taught you how to protect your Core?" the serial killer asked in a frustrated voice while clutching Moon Noa's chest tight. "Are you secretly an E-Class Guide?"
"Who knows?" Moon Noa retorted, smirking. "Maybe we're the same class, after all?"
