Summary
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Yamato's deep admiration for Kozuki Oden influenced his desire for freedom and shaped his future dreams.
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During the Raid on Onigashima, Yamato's role was crucial to the success of the mission, assisting the Straw Hats and Momonosuke.
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Yamato's stance against Kaido served to break free from his father's grip and delay Kaido until Luffy returned, influencing the battle.
Yamato was an important ally of the Straw Hat and Ninja-Pirate-Mink-Samurai Alliance during the Raid on Onigashima in One piece. Despite being Kaido's son, Yamato cared little about his father and his ambitions for Yamato's future.
Instead, Kozuki Oden had a lasting impact on Yamato and would later be the catalyst for his desire for freedom. Yamato played a vital role during the Raid, as his knowledge of Onigashima's structure and strength would become useful in difficult times.

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The influence of Kozuki Oden's death on Yamato
Oden's impact on Yamato profoundly affected the way he viewed life and his future dreams
Yamato was initially born female, and as Kaido's daughter, she was expected to become his heir as she was previously known as the “Oni Princess”. However, 20 years earlier, Yamato had witnessed Oden's death during the Legendary Hour and was captivated by his adoration for him and his ideology. Unfortunately, since Yamato was only eight years old at the time, he was too weak to prevent his execution and resist his father.
I was moved to tears seeing how Kozuki Oden lived his life!!
After witnessing Oden's death, Yamato also found his logbook near the river at Oden Castle that day and has considered it his bible ever since. Yamato was so moved by the “One Hour Execution” and Oden's log that she decided to become a man and live like Oden, taking on his name and living up to his ideals.
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At the age of eight, Yamato witnessed Oden's death and was deeply moved and inspired by it.
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For 20 years, Yamato lived by Oden's ideals and used his logbook as his bible.
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Yamato wanted to open the borders of Wano Country, sail the seas and have adventures, living as freely as Oden.
Unfortunately, since Yamato was Kaido's son, he was also imprisoned on Onigashima for 20 years, unable to leave the island as his chains were filled with bombs. During this time, Yamato rebelled against Kaido, as his hatred for his father grew while his admiration for Oden grew. Kaido's hold on Yamato continued to sow the seed of mistrust and hatred, as Yamato also sought to travel the seas; however, whenever she rebelled, Kaido met her resistance with punches.

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Although Kaido wished for Yamato to be his heir in the “New Onigashima” and turn him into the next Shogun, Yamato was not enthusiastic about this plan and refused to participate. Although Yamato took the name Oden and chose to live as him, Yamato did not seek to be the next Shogun; however, he wished to elevate Momonosuke to this level and open up the Wano Country.
Yamato's vital role during the raid on Onigashima
Yamato lent a hand numerous times during the raid and had a lasting impact on the results
Bow |
Wano country |
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Episodes |
983-1077 |
Chapters |
978-1050 |
During the Raid on Onigashima, Yamato's role was crucial to the success of the mission. Although the Straw Hats did not expect an additional ally, which was Kaido's son, Yamato continued to prove himself worthy of Luffy and Momonosuke's trust at the start of the Raid. While many were slightly shocked that Kaido's son was witnessing the Raid, Yamato's strength, strategy, and motivation were another nail in the coffin needed for the mission's success.
Yamato's contact with Luffy and Momonosuke would set the stage for the rest of the Raid. Yamato, establishing himself as an ally of the Straw Hats and a powerful fighter who also knew Ace, proved himself trustworthy in more ways than one.

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After Kaido defeated Luffy during their first round and Law and Kid were occupied by Big Mom, Yamato took a stand against his father to finally free himself from the psychological chains Kaido still had on him. Yamato taking the initiative to fight Kaido served two purposes: the first was to free himself from Kaido's grasp, and the second was to slow down Kaido until Luffy returned to the battlefield. If Yamato had not taken this stance, the battle inside the Skull Dome on the Live Stage would have taken a drastic turn, as many would have lost hope that Luffy would not return.
Luffy is what Kozuki Oden was waiting for!! I'll keep you at bay… until he comes back!!
Yamato is Kaido's son and is also very powerful. He has the Supreme King Haki and the mythical Zoan Inu Inu no Mi, the Okuchi no Makami Devil Fruit pattern, each of these elements makes him a formidable opponent and a fantastic ally. During their battle, Yamato's statement to his father later affected him during his second battle with Luffy. He drunkenly complained about various failures and continued the battle while drunk.
It has always been known that Momonosuke is cowardly and terrified of taking a stand against Kaido. However, although Momonosuke has outwardly shown his cowardly side, he always strives to improve himself and be the brave warrior Luffy, and the Nine Red Scabbards know that he can be that. Although Luffy is a tremendous source of motivation for Momonosuke, having Yamato by his side, providing constant reassurance and encouragement, helped Momonosuke find the courage within himself to prevent Onigashima from falling on the Flower Capital.

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Although Momonosuke struggled with his inner cowardice and lack of self-esteem, Momo found within himself the need to take charge. With the Flower Capital safe from mass casualties, Yamato's support and constant reassurance were vital to Momo's self-esteem.
Yamato was also aware of Kaido's plan, had a good idea of Onigashima's layout, and was quickly able to reach the basement armory, where the explosive gunpowder would detonate, resulting in mass casualties. With his power, he could freeze the Armory, preventing an explosion with his Devil Fruit ability, preventing both Kazenbo and Big Mom from using the bombs, after which he could reassure Momo from the broken inside.
At various points in the Raid, Yamato showed great help during the battle against Kaido, keeping Momo safe and giving him the courage to take a stand and prevent mass casualties from occurring. Suppose Yamato hadn't been there to teach Momo how to use her Flame Clouds effectively and reassure him as they approached the Flower Capital. In that case, Momo may not have found the courage and strength to push Onigashima away, even with Luffy motivating him to do so.
One piece can be streamed on Crunchyroll.

One Piece is a Japanese manga written and illustrated by Eiichiro Oda. The series follows protagonist Monkey D. Luffy and his crew of Straw Hat Pirates as they explore the Grand Line to find the Pirate King's final treasure, One Piece, to become the next king. The manga's popularity helped it grow into a larger media franchise, including an anime with more than 1,000 episodes.
- Seasons
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20
- Study
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Toei animation
- Number of episodes
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1122