Susanoo-Mangekyō Sharingan's Ability!
When Mu Feng's Sharingan was upgraded to Mangekyō Sharingan, one of the two pupil techniques was unlocked. Mu Feng was surprised to discover that he had obtained the pupil technique of Susanoo. This came as a surprise to him, as he believed Susanoo was the third power that could only be unlocked after unlocking the abilities of a pair of Mangekyō Sharingan.
Susanoo is known as the power of God and symbolizes destruction and devastation. It is said that anyone who witnesses it will inevitably die. Naturally, Mu Feng was eager to possess the ability to use Susanoo.
Since Mu Feng's Mangekyō Sharingan is only in a single pupil state, he can only access the first form of Susanoo. A huge blue-purple skeleton emerges, enveloping Mu Feng within it. The skeleton stands about forty meters tall, towering over the sea and appearing even more massive than Jack's mammoth form.
The Marines' morale is gradually rising as they witness this incredible display of power. On the other hand, the Shanghai thieves riding on the Mammoth appear panicked. Susanoo, being a pupil technique that symbolizes destruction, exudes a terrifying pressure that instills fear in the pirates.
Jack, realizing that Mu Feng's power comes from the Devil Fruit of the Eudemons species, expresses his anger and determination to defeat him. He leaps from the Mammoth and attacks Susanoo with his fists. Mu Feng retaliates, and their clash results in a tremendous explosion of power and a massive wave that shakes the sea.
Susanoo, being an energy state, can be maintained as long as Mu Feng's pupil power continues. Jack, on the other hand, being a flesh and blood being, starts to show signs of weakness under the relentless assault of Susanoo. Eventually, Jack is forced to retreat, much to the disbelief of his subordinates.
Realizing that he cannot fully utilize the power of the mammoth fruit in the sea and that he cannot defeat Mu Feng quickly, Jack decides to retreat. The pirates on the Mammoth are equally unwilling but have no choice but to follow Jack's orders.
The Marines on the battleship are amazed by Mu Feng's victory over the formidable "Drought" Jack, who is known to possess Admiral-level strength. Mu Feng's triumph marks a significant achievement for the Marines, as Four Emperors like Jack are considered behemoths capable of attacking Naval Headquarters.
Mu Feng, not willing to let Jack escape, launches another attack on the Mammoth. Jack, consumed by anger, tries to retaliate with a mammoth-powered punch. However, Mu Feng's Susanoo holds a gray-black stone in its fist, which goes unnoticed by Jack in his enraged state.
(Note: This edit is based on the assumption that the original text is a fanfiction or a story inspired by the Naruto and One Piece universes.