Who is the main villain in Sakamoto Days? Explore the answer to this question, his strengths and abilities, and his role in the series.

Sakamoto Days is one of the most popular new-gen manga and anime that has been captivating fans through its enjoyable combination of action and comedy. The series follows Taro Sakamoto, a retired assassin who runs a convenience store with his wife and daughter. While trying to live a normal life, the enemies of his past come back to trouble him, making him struggle to retain his new, relaxing environment.
While Sakamoto Days is a lighter story initially, it soon takes a more serious tone. This can be attributed to the introduction of its fearsome antagonist. So, who is the main villain in Sakamoto Days?
The main villain in Sakamoto Days is Kei Uzuki, the leader of an organization attempting to destroy the Japanese Association of Assassins. Here is a closer look at this character.
Who Is Kei Uzuki in Sakamoto Days?

Kei Uzuki, also known as “X”, is the primary antagonist of Sakamoto Days. At first glance, he seems to be a cold and calculating man who is willing to do anything for his goals. He overwhelms Shin during his introduction and is capable of brutally murdering multiple people.
In contrast to his intense attitude toward outsiders, Uzuki is caring toward those in his inner circle. He runs an organization with friends from his childhood, shown to enjoy his time with them.
Uzuki’s main trait is his dissociative identity disorder, where he loses rationality when put under high-pressure situations. This lets him perfectly mimic the personalities of others and even copy their powers. His complex past and tragic life shape his goals in Sakamoto Days.
Kei Uzuki’s Role in Sakamoto Days

Uzuki’s main role in Sakamoto Days is to bring down the JAA organization that manages the country’s assassins. Rather than wishing to simply cause chaos, however, Uzuki’s motivations are far more layered.
As a child, Uzuki was raised in the Al-Kamar Orphanage with friends such as Kumanomi and Gaku. However, this environment also served the purpose of training promising candidates to become new members of The Order.
Despite not wishing to get his hands dirty, Uzuki was being manipulated by his brother Kei Asaki — the current Chairman of the JAA. He was forced to carry out assignments under the threat that his friends in the orphanage would be harmed.

During these missions, Uzuki met Rion — a talented female assassin to whom he got very close. Rion was one of the few people who showed Uzuki compassion, and the two shared a relationship far stronger than friendship. Unfortunately, right when he finally felt happiness, it was snatched away from him. Asaki used Uzuki’s kindness, promising to set his friends free if he carried out one final mission for him. This involved killing an assassin who earned his ire.
Uzuki, who accepted, only found the truth once it was too late. He had been tricked into killing Rion, after which he lost his will to live. Despite resigning his fate to die at the hands of Sakamoto — who had come to kill him — he survived. This brought about a change in his personality, strengthening his resolve to change society.
He took the moniker of X, setting up an organization dedicated to bringing down the JAA. By orchestrating large-scale attacks and killing the Chairman, his brother, he wishes to bring the world back to its original state.
Every Member in Kei Uzuki’s Organization

As we have already seen, Uzuki’s motivations in Sakamoto Days are far from simple. He might seem ruthless, but there is benevolence hidden inside him. Recognizing his true personality and supporting his goals, he has reliable allies around him in his organization. These include:
- Gaku
- Kumanomi
- Kanaguri
- Haruma
- Club Jam
- Mad Horiguchi
- Gozu
- Carolina Reaper
- Uda
The other supporters of this group are:
- Tenkyu
- Kashima
Kei Uzuki’s Strengths and Abilities

Kei Uzuki is one of Sakamoto Days’ strongest characters, with many arguments regarding him being the most powerful as well. Having been trained as a potential member of The Order, he is a very skillful assassin with enhanced reflexes.
He masterfully uses a sword-whip as his weapon and is durable enough to withstand the attacks of both Sakamoto and Takamura. However, Uzuki’s most broken ability is connected to his dissociative identity.
In near-death situations, Uzuki takes on the personalities of those around him. This doesn’t merely copy their actions but also lets him use their powers. As a result, Uzuki has the abilities of Rion and also the terrifying Takamura. Since he has Situs Inversus, Uzuki’s internal organs are also mirrored.
As a result, it is hard to land a fatal blow on him, which is what allowed him to escape Sakamoto after Rion’s death. Therefore, Uzuki’s strengths are extremely difficult to contain since he can steal the powers of others for unnatural reasons. He is a highly capable fighter, supported by dedicated followers. This is what has helped him become the greatest threat in Sakamoto Days.
Conclusion
Kei Uzuki stands as the main villain in Sakamoto Days, serving as a reminder of the dark underbelly of the assassin world. He has committed several atrocities, but it is not easy to label him as evil due to his tragic history. Nevertheless, anime fans have a lot to look forward to due to the character’s recent appearance in the series.
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