Mu was the Hidden Stone's Second Tsuchikage, and arguably the strongest one out of the four.
With access to the Dust Release Kekkei Tota, mastery over all five nature transformations, and the ability to nullify his own chakra presence, Mu's strength truly remained unrivaled.
However, the Second Tsuchikage wasn't above dealing in underhanded tactics for the benefit of the Hidden Stone, a belief that he even imparted to his successor.
This very cunning nature is what led to the Second Mizukage, Gengetsu Hozuki, despising Mu. The two developed a shared hostility towards each other, and this very enmity led to their mutual deaths in a lethal confrontation.
Gengetsu Hozuki was born into the Hozuki clan of Kirigakure many years before the start of the series and eventually became the Second Mizukage.
During his lifetime, he had a mutual enmity with Mu, the Second Tsuchikage, and the two men eventually killed each other in what became their final confrontation.
Base on his spy, one of the CPO witness the fight of Second Mizukage and Second Tsuchikage to death.
The fight is so intense and it takes two days until they both dead using thie own powerful Jutsu.
With Mu's Blood Limit, Dust Release, he should be the final winner of this fight, and the Iwagakure will be the biggest winner of the war but because of Mu's own cunning and underhand tactics he developed a mind of weak.
He never use powerful Jutsu to end the fight, he always overthinking of different ideas that leads the fight to two days.
Meanwhile Gengetsu is a intellectual man who use his Jutsu with greatest extended utilizing his own expertise into full.
With just his Hazuki Clan unique Jutsu Water Release: Water Gun Technique, he have ehuge advantage in the fight.
The fight only end after Gengetsu use his Water Clone Jutsu to sneak attack Mu behind his back piercing his heart in process.
Knowing his time is running out, Mu use his ultimate Technique to end pull Gengetsu to him.
Dust Release: Atomic Dismantling Jutsu
The user uses Dust Release to create a structure, with a sphere located at its centre, between the palms of his hands.
The structure expands rapidly in size when being propelled towards its intended target and traps them inside its confines.
The sphere then seems to explode with a tremendous amount of force, while the exterior walls of the structure effectively restrict the size of the blast radius, resulting in the destruction of everything and anyone caught within as they are pulverised into minute particles of dust.
With his remaining time he hold Gengetsu to death until finally fall down after her bleed out of his heart.
Hearing this report, Xin did not expect that two of the most powerful Kage of two different Village will meet their end in the end of the Second Ninja World War.
Both of them is alive right now if they did not fight and chose to recuperate in the end.
Maybe because of the rivalry of two or the fate of both person can't hardly stop so they end both dead in the end.
While on the other hand, Third Raikage, he died heroically if you think what he did is right.
He faced an opposing force of ten thousand shinobi single-handedly for three consecutive days and nights, in order to allow his comrades to escape to safety.
He eventually died in this battle and with his death, the position of Raikage was passed onto his son, A.
He would, however, become renowned for his extraordinary level of durability, endurance, and strength above all else, to the point where his body itself would become reputed as the "strongest shield"
From the report, the new Tsuchikage did this to take revenge from the embarrassment and to solidify his own Village Rank.
But the use of ten thousand Shinobi to kill one man even if he is the Third Raikage is to much.
Not only he idiotically use all the hidden Shinobi of the village, he also lost some of the strongest Shinobi of the village.
Onoki left alone after he awakened, he just realized that killing A Third Raikage is not worth after all the powerhouse of Iwagakure died in the end.
Now Iwagakure feel into huge problem after losing such huge amount of Shinobi, he even shrink the border to come up of missing Shinobi patrol.
Maybe it takes many years for Iwagakure to recover from such desperate win.
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