"...It might sound impressive, but it wasn't actually such an extraordinary technique."
On a temporary clearing carved out somewhere in the Sea Forest, Shanks, acting as a temporary teacher, was giving Bright a lesson. The usually carefree man had become uncharacteristically serious. "It's really just one way of using Observation Haki."
"Bright, your Observation Haki is far stronger than mine. You simply didn't know about this technique."
Bright rolled his eyes. "No need for the pointless chatter, right? Let's get to the point."
"What an impatient guy."
Red-Hair scratched his head and muttered, "This is my first time being a teacher. You're not giving me any face at all."
"Fine, fine. Since the student is in such a hurry, the teacher naturally can't keep him in suspense on purpose."
Red-Hair cleared his throat twice, then said seriously, "It's actually very simple. The technique of Observation Killer is the opposite of how we usually use Observation Haki."
"Normally, when we use Observation Haki, no matter how advanced our mastery or how remarkable the technique, we release it outward to observe the auras of the outside world."
"But Observation Killer is different."
Bright was already deep in thought.
Red-Hair continued, "This technique requires you to restrain your Observation Haki, disrupt your own aura, and interfere with other people's Observation Haki. That way, you can make yourself invisible to them in terms of aura."
"Easy enough to understand."
Bright nodded lightly. The principle was not difficult to grasp; it was merely one directed outward and the other inward. "So how exactly do I do it?"
The principle was easy to understand, but the technique itself was the key.
"If you're asking about training methods or techniques, I don't really know much about that either."
Red-Hair said, "I only mastered this technique by chance.