Sephiroth had completely remodeled his appearance into that of "One-Winged Angel Sephiroth"...
He had even lengthened his hair through a "bioelectric version of Life Return." He had deliberately hidden his flame clouds, too.
In the original story, the Five Elders could manifest flame clouds even in fully human form, so they should also be able to hide them. Sephiroth gave it a quick try, and sure enough, it worked.
(Consider this an excuse for Kaido; let's assume he hid his.)
His silver hair came naturally with "Mythical Zoan: Great Angel Mode."
Floating in the air, he looked down on Kaido. Stones and building debris surrounded him, seemingly affected by "antigravity."
...In reality, metal dust had infiltrated them, using magnetic levitation to imitate antigravity.
He really did look like the "One-Winged Angel," a demon king descending upon the world.
The Black Blade Shusui in Sephiroth's hand was the only part that did not match the look.
But wielding this sword in Wano Country meant something. After all, quite a few people were watching.
As for the "original Masamune," even Sephiroth's current smelting techniques could not produce a version suitable for actual combat.
The original Masamune had a hilt only forty to fifty centimeters long, a blade three centimeters wide, and a thickness of just a few millimeters.
Judging by its proportions across different Final Fantasy titles, its length varied between two and four meters.
A sword that slender and long could never be used in actual combat unless it was made from some fantastical material.
Using exhaustive trial-and-error metallurgy, Sephiroth had produced a two-meter version.
In practice, he had to keep it coated in Armament Haki or continuously reinforce it with electromagnetic force. Otherwise, it would snap upon impact.
During his earlier sparring with Hancock in Kuja territory, when they tested