"Watch closely. This is Sword Qi Thunder Sound."
As Shin spoke in a serious tone, the longsword in his hand suddenly let out a series of soft hums. The sound immediately spread, and he unleashed an unimaginable sword qi slash.
With a single strike, the sea before him abruptly split apart. Beneath that indescribably sharp sword qi, rolling thunder followed.
Crash...
The parted waves came pouring down like torrential rain. The crew stared blankly at the sight until the seawater was about to crash over them, only then snapping out of it.
"Mr. Shin, what was that?" Shanks hurriedly asked, stars practically sparkling in his eyes.
Quite a few great swordsmen could split the sea with sword qi. Leaving aside others, Rayleigh and Roger could accomplish such a feat without any effort.
Even Shanks himself could achieve a similar effect if he went all out.
But Shin's strike was different. Shanks keenly sensed that something else was hidden within Shin's sword qi. That rolling thunderous sound was anything but ordinary.
With a soft laugh, Shin tossed the longsword back to Rayleigh. "Sword Qi Thunder Sound. Once your sword qi breaks the sound barrier, that thunderous roar will naturally accompany it. It is a supreme path of swordsmanship. If you can master it, I doubt many people in the pirate world will be your match."
"B-break the sound barrier?" Shanks widened his eyes and looked again at the sword in his hand. Could something like that really be done?
Rayleigh, standing in the distance, frowned slightly and lowered his head in thought. He did not have many demands when it came to weapons. Whether it was a sword, a blade, or any other weapon, he could unleash terrifying power with it in hand.
Fundamentally, Haki was what he specialized in. With