Senju Clan: The Founding Clan of Konoha

The clan that built Konoha: descended from the Sage of the Six Paths, eternal rival of the Uchiha and cradle of three Hokage. Meet the Senju clan.

The Clan of a Thousand Techniques

The clan name is written 千手 and reads "a thousand hands" or "a thousand techniques." The third databook, Sha no Sho, states in its "Shinobi Well-Informed Records" section that it designates "the clan of a thousand techniques". The phrase is not decorative: unlike the other shinobi clans, the Senju did not specialize in a single field and mastered ninjutsu, taijutsu, and genjutsu, all at once, so as to have a broad range against any opponent. The name was born of that versatility, not the other way around.

A second nickname was in circulation: "the Senju of the Forest" (森の千手一族), attested in chapter 398, page 15. It refers to Wood Release (Mokuton), even though only one known member of the clan was able to use it. The same third databook goes further, on page 338: it holds them to be the strongest clan of the Warring States Period and credits them with eventually breaking the Uchiha's will to fight. The assessment comes from the databook, and not from the story itself, which is not the same thing.

The clan owes to Asura Otsutsuki a powerful life force and chakra, an inheritance that manifested as Wood Release only in Hashirama, and in him alone. Chapter 619, page 13, adds a detail that is often forgotten: the strength of the Senju was held to be founded on love. The wording is in the past tense: it is what was believed at the time and not what the story establishes, which makes it a period belief rather than a verified trait of the clan.

The Rivalry With the Uchiha

The Senju descend from Asura, the younger son of the Sage of the Six Paths; the Uchiha clan descends from his elder brother, Indra. Chapter 462, pages 12-13, sets out the doctrinal gap: Indra believed peace was reachable through power, Asura through love, and the two brothers fought during their lifetimes over the inheritance of the Sage's ways. Their fight then carried on from generation to generation, taken up by their respective descendants.

The same passage notes a singular fact: neither the Senju nor the Uchiha remembered the reason for their conflict. The quarrel had been handed down emptied of its motive, and the two clans were fighting without knowing why they had begun. What memory retained instead were the dead: every Senju owed the loss of a loved one to an Uchiha, and vice versa. The permanent war between the two houses thus fed its own hatred, without needing to recover its cause.

Hiring a Clan: How the Senju Were Engaged Before the Villages

Before the hidden villages, the countries of the shinobi world were uniformly small and fought constantly over land, power, and opportunities. To wage those wars, they hired one or more shinobi clans to represent their interests, and the loyalty of those clans went to the highest bidder (chapter 398, pages 16-17). The Senju were therefore not a nation's army: they sold their services to countries that could change from one contract to the next.

Chapter 398, page 11, sets the frame: before the villages, most of the clans then in existence were mercenary forces that anyone could hire. Since the Senju and the Uchiha had emerged as the two strongest clans in the world, every time one side hired one of them, the opposing side hired the other. The duel between the two houses is therefore not only a matter of inherited hatred, it is also a market mechanism. Chapter 622, pages 12-13, puts a figure on the cost: an average life expectancy of thirty years, and children sent to the front like adults, most often killed by older opponents.

With alliances shifting constantly, vendettas followed: shinobi had made a habit of never giving their family name to a stranger (chapter 622, pages 4-16). And the Senju did not face only the Uchiha. The Hagoromo clan (羽衣, "robe of feathers") fought alongside the latter against them; the fourth databook, Jin no Sho, page 213, and the Naruto Quiz Book, page 228, attribute to that alliance the death of Kawarama Senju — seven years old according to the same databook — and that of many other members of the clan.

Butsuma and Toka: Two Senju Named, Never Developed

Butsuma Senju (千手仏間) led the clan during the Warring States Period: he was the father of Hashirama, of Tobirama, of Kawarama, and of Itama. His techniques are never detailed; only his weaponry — a sword worn on the back, sometimes paired with a tanto at the shoulder — suggests that he practiced kenjutsu. Chapter 622, pages 6-10, shows him in front of the coffins: he scolds Itama for crying, then strikes Hashirama, who has just called Kawarama's death pointless, and tells him that anyone who carries a weapon is an enemy.

His line on page 9 sums him up: raising one's children into capable shinobi is "the most sincere form of love" a parent can give. Learning afterward that Hashirama is spending time with a stranger, he has Tobirama follow him, identifies Madara, orders him spied on and killed if he discovers the mission, but hides the matter from the clan so that his son will not be taken for a traitor. In chapter 624, facing Tajima Uchiha, each tries to kill the other's son to create an opening; it is before the eyes of Butsuma, reputed to be Tajima's equal in strength, that the young Madara awakens his Sharingan.

Toka Senju (千手桃華, "peach blossom") was a kunoichi of the clan, active before the founding of Konoha. The third databook makes her a close and trusted associate of Hashirama during that period, and says she was renowned throughout the world for her genjutsu; the exact extent of her abilities is never given. One divergence between media is worth flagging: the anime gives her a different appearance from the manga, with dark eyes, a pointed chin, no lipstick, and a less elaborate bun.

First Names Ending in "-ma" and a Vajra-Shaped Symbol

Every known male Senju from before Konoha bears a first name ending in "-ma," most often written with the kanji 間, which denotes a space, an interval, a room. And each of these names denotes the interval between two specific things: Hashirama 柱間, between two pillars; Tobirama 扉間, between two doors; Kawarama 瓦間, between two roof tiles; Itama 板間, between two slats of a duckboard, that open-slatted flooring laid over muddy ground. Butsuma 仏間 keeps the character but steps outside the pattern: it is the room that holds a house's Buddhist altar.

The rule applies only to the men of the clan, and Toka 桃華 is not subject to it. After the founding of the village, the pattern disappears: Nawaki 縄樹 means "rope tree" and Tsunade 綱手 "mooring rope," two names that echo each other from brother to sister but no longer refer to any interval. The naming pattern therefore stops with the era of the clans.

The crest, for its part, does not change. The clan's symbol resembles a vajra, both a symbol and a ritual object of Buddhism and Hinduism, which represents a force that is at once indestructible and irresistible. It can be seen on the collar of each of Hashirama's shoulder guards and, before the village existed, on the piece of white cloth he wore on his forehead — a piece he would later replace with the Konoha headband (chapter 622, page 15). Kawarama's coffin was engraved with it as well.

The Co-Founders of Konoha

This hatred comes to an end with the pact sealed between Hashirama and Madara: their two united clans strike an agreement with the Land of Fire, which allows them to found a village inside its borders — that village will be Konoha (chapter 625). Hashirama's reasoning is explicit: if the two strongest clans joined forces, no other could stand up to them, the clans would stop selling their services and the Warring States Period would thereby be brought to an end.

The agreement does not remain a matter for two houses. Other clans come and settle in the village to share that peace, the Shimura and the Sarutobi among the first, and the Konoha model is eventually taken up throughout the shinobi world (chapter 399, pages 4-7). Three Senju will hold the title of Hokage: Hashirama, his brother Tobirama in second position, and his granddaughter Tsunade in fifth.

Tobirama's role as Second Hokage was precisely to help the village's shinobi put Konoha before their clan. To that end he created the Ninja Academy, the Anbu, and the Chunin Exams, institutions so effective that the other villages adopted them in turn, according to the third databook. He was also the inventor of the Reanimation Jutsu and of the Shadow Clone Jutsu, two techniques that he himself classified as forbidden techniques once peace had come.

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The Charge of Senju Supremacy, and What the Manga Says About It

It is the villagers of Konoha who choose Hashirama as First Hokage; his mastery of Wood Release, which produced a large part of the village's infrastructure, and his ideals are among the reasons for that choice. Madara reads into it the first step toward a domination of the Uchiha by the Senju and leaves the village in protest (chapter 626). The same chapter, however, credits the man himself with the opposite intention: Hashirama had no wish at all to leave his clan in charge, and thought it preferable for all the inhabitants to serve the interests of the village rather than those of their family.

In chapter 627, page 4, he spells out his conviction: loyalty to the village ought to be enough to dissolve the clan reflex on its own. The facts prove him wrong, and that is where Madara's fear is borne out. Two other Senju will hold the title; above all, each of the following Hokage belongs to a tree of master-student relationships that goes back to Hashirama. Continuity therefore runs not through the family name, but through the line of teaching.

What follows is documented. Tobirama creates the Konoha Military Police Force and hands it to the Uchiha, publicly as a token of trust between the two clans (chapter 399, pages 12-13); set up in a remote part of the village, it inherently deprives the Uchiha of any position of influence and feeds in some of them the feeling of being deliberately isolated (chapter 399, pages 12-14). In chapter 399, page 13, and chapter 400, page 8, the Uchiha judge themselves mistreated by a Konoha government under Senju influence — a grievance that will feed the coup plot, and then the massacre of the clan.

Mokuton, an Exception

One persistent confusion deserves to be corrected: Mokuton, Wood Release, is not a hereditary power of the clan. The Senju inherit from Asura a particular life force and chakra, and it is in Hashirama alone that this inheritance ended up manifesting as Wood Release. None of his descendants is known to have inherited it, and the kekkei genkai is not reputed to have appeared naturally in anyone else, apart from the Ten-Tails, whose true form is the God Tree.

The best proof is internal to the manga, and it comes from his granddaughter. In chapter 576, pages 16-17, Tsunade says it to Madara in so many words: although a descendant of the First Hokage, she does not know how to use Wood Release, and what she inherited from her grandfather is not mere power. The correction therefore does not rest on an outside claim, but on the admission of the character best placed to contradict it.

All the other known bearers obtained it through a graft of Hashirama's cells: Yamato, the only survivor of the sixty children Orochimaru had inoculated, Danzo through an infusion applied to his right arm, Madara through a graft placed on his reanimated body. The power and the versatility of Wood Release prompted a great many attempts at reproduction after the death of its only natural holder; the anime adds that Konoha authorized several of them, that they all failed, and that its study was banned thereafter. The forest clan nickname thus rests on a single man.

Nobody Knows If the Clan Still Exists

Unlike the Uchiha, the Senju were not massacred. Beyond that, caution is in order: it is unknown whether the clan still formally exists, since no living inhabitant of Konoha is known to bear that name. There is neither a date of disappearance nor a leader after Hashirama, who remains the last known head of the line after his father Butsuma. Uncertainty is therefore the real state of the record, and not an editorial precaution.

The case of Tsunade calls for the same restraint. She is presented as a descendant of the Senju and the Uzumaki, granddaughter of Hashirama and of Mito Uzumaki, but never under the surname "Tsunade Senju". The nuance is not cosmetic: it rules out making her the last Senju in the clan sense. It is from this dual ancestry that she gets her life force and her physical energy, those of both clans at once.

The Senju are also distant relatives of the Uzumaki clan, and the two houses remained close allies over the years. They sometimes intermarried, Hashirama and Mito being the example, and the Uzumaki supplied fuinjutsu whenever the Senju needed it (chapter 500, pages 3-4). The kinship with the Uchiha, for its part, is far more distant, since it goes back to the Sage's two sons.

What Remains of the Senju: A Park, a Mead, and Two Lines of a Novel

The only traces of a living line of descent come from two novels, and not from the manga. In Itachi Shinden: Book of Bright Light, page 50, Itachi mentions the existence of Ninja Academy teachers whose lineage is tied to the Senju clan. In Konoha Hiden: The Perfect Day for a Wedding, page 86, Kurenai suggests that Shino and Kiba give mead, a drink with nourishing and restorative properties that the Senju once gave as a wedding gift.

The detail is worth following all the way through, because it says something about the state of the clan. The mead is so rare that it is not sold at all in Konoha: you have to go and fetch it in Sora-ku, from a beekeeper. And on the wedding day, Kiba questions Kurenai about the Senju in order to sound knowledgeable about the mead; the fact that he recognizes the name only from his history lessons is what, in the novel, suggests that the clan is no longer active.

The Boruto anime, for its part, has kept a place: Senju Park (千手公園), a large wooded expanse in Konoha with a giant tree, a pond, and a playground. It is damaged by two successive attacks, then largely devastated during the fight against the Nue — the affair involving Sumire Kakei — before being repaired. On the game side, Naruto Mobile credits the Senju with considerable physical strength, which commits no one but itself. The legacy the clan leaves the village is intangible: its influence lives on in all the inhabitants, mainly through the Will of Fire.

Summary Table

FAQ

• Is Mokuton the kekkei genkai of the whole Senju clan?
  No. Mokuton is indeed a kekkei genkai (a fusion of Earth Release + Water Release), but it appeared only in Hashirama Senju; no other member ever possessed it from birth. It was only "passed on" to others by grafting Hashirama's cells.
• Why is the Senju clan called the founding clan of Konoha?
  Because it is its leader, Hashirama Senju, who seals with Madara Uchiha the peace pact that put an end to centuries of war between the two clans: from that alliance the village is born, and Hashirama becomes its First Hokage. The clan will give three Hokage in all, with his brother Tobirama and his granddaughter Tsunade. The title is not exclusive, however: the Uchiha are co-founders in their own right, and it is precisely their being forgotten that will drive Madara to leave Konoha.
• What is the family relationship between Tsunade and Hashirama?
  Tsunade is the granddaughter of Hashirama Senju and Mito Uzumaki, not his daughter. She becomes the Fifth Hokage, which brings to three the number of Hokage from the Senju clan.
• Are the Senju and the Uzumaki the same clan?
  No, they are two distinct clans but distant relatives, both descended from Asura. They remained allies, with marriages between the clans (Hashirama × Mito). Naruto, for his part, is an Uzumaki — not a Senju.
• Who does the clan descend from, and where does the rivalry with the Uchiha come from?
  The Senju descend from Asura Otsutsuki, the younger son of the Sage of the Six Paths; the Uchiha from his elder brother Indra. Their opposition — peace through love for Asura, through power for Indra — founds an ancestral rivalry that lasts until the founding of Konoha.

In summary

Builder of the village and lifelong rival of the Uchiha, the Senju clan gave Konoha three Hokage and its ideal of peace — before dying out almost entirely, leaving only Tsunade.