Hajime Kashimo

Biodata

Power Progression

• Timeline distinction: The Mythical Beast Amber transformation occurs in an alternate simulation of Kashimo’s original lifetime, not after his modern incarnation 5 10.
• Grading caveat: The narrator explains that the simulator’s Grade 1 assessment reflects Xia Xia’s mistaken understanding of Special Grade criteria. Kashimo’s inability to use Domain Expansion does not establish that his destructive power is only Grade 1 13.

Background / History

Kashimo was born into an era devastated by war. His innate cursed technique would kill him if released, leaving him to build his reputation through ordinary attacks enhanced by lightning-aspected cursed energy. Sorcerers repeatedly challenged him, hoping to defeat him or at least force him to reveal a Domain Expansion. Instead, he neutralized their domains with Hollow Wicker Basket and killed them with lightning 6 10.

His strength earned him the title Thunder God, but he had no interest in ruling. When people attempted to offer him young boys and girls as sacrifices, he would have preferred that they find worthy opponents for him. As aging threatened his ability to fight, he accepted a contract with Kenjaku that enabled his eventual incarnation in the modern era 5 17.

Appearance

• Eyes: Clear blue-green eyes, compared to the reflective surface of a lake 17.
• Historical appearance: An unremarkable-looking, thin figure with a perfectly straight back, likened to withered bamboo or a weathered pine 6.
• Old age: Clouded eyes and an aged, sickly body vulnerable to Xia Xia’s ambush 10.
• Mythical Beast Amber: Azure lightning replaces his damaged flesh, transforming him into a humanoid storm of cursed energy 10 11.

Personality

Kashimo is a martial fanatic who judges others primarily by their strength and skill rather than their morality. He treats a serious challenge as an invitation to fight without restraint, considering a swift death more respectful than tormenting a defeated opponent. His admiration for Xia Xia’s swordsmanship is strong enough to overturn his disgust at the younger man’s assassination tactics 6 11.

Despite his pride, Kashimo can acknowledge defeat and offer genuine instruction. He patiently corrects Xia Xia’s fighting style when approached sincerely, while his warrior’s intuition exposes many deceptive attempts to win his trust. Aging and illness frighten him more than weakness or defeat; his desire to face Sukuna is tied to loneliness and the possibility of finding something he calls “love” through battle 15 16 17.

Abilities & Skills

Lightning-Aspected Cursed Energy

Kashimo’s regular fighting style uses lightning-aspected cursed energy without fully releasing Mythical Beast Amber 10.

• Charge Pursuit: Plants an electric charge on an opponent, then releases lightning that locks onto the marked target and cannot ordinarily be dodged 11 31.
• Repeated attacks: His charge-based lightning provides sure-hit-like targeting without Domain Expansion or the associated technique burnout 14.
• Defensive use: Wraps himself in cursed energy and uses invisible lightning to parry Xia Xia’s blade 15.
• Collateral damage: His lightning’s fallout carbonizes the Grade 2 Xia Xia before Xia Xia can reach him 5.
• Countermeasures: Targeted lightning immunity and Raikiri can render his attacks ineffective 12 16.

Hollow Wicker Basket

An anti-domain barrier technique that neutralizes a domain’s sure-hit effect 6.

• Activates it in less than half a second against a swordsman’s Domain Expansion 6.
• Defeats two opponents during a three-way battle despite keeping both hands occupied with its hand sign 6.
• Cannot neutralize the postmortem Cursed Execution of Xia Xia’s Death-Bound Curse 11.
• Becomes the master-level core reward obtained from his treasure bag 13.

Kashimo cannot use Domain Expansion himself. His reliance on Hollow Wicker Basket becomes a decisive vulnerability against Death-Bound Curse 11 14 16.

Mythical Beast Amber

Kashimo’s innate cursed technique strengthens and reshapes his body at the cost of its eventual collapse into lightning 5.

• Greatly increases physical strength, reaction speed, and cursed energy output 5.
• Can forcibly alter his body to improve its offensive capabilities 5.
• Allows the mortally wounded historical Kashimo to continue fighting as a storm of cursed energy after his human body and cursed energy core are destroyed 10 11.
• In that transformed state, he endures three demon-blade slashes rather than attempting to dodge them 11.
• Is fatal to its user; his final historical activation also includes a binding vow guaranteeing death when the battle ends 10.

Martial Arts and Combat Judgment

Kashimo is an accomplished barehanded fighter with extensive knowledge of weapons and swordsmanship 6 11 15.

• Recognizes multiple schools within Xia Xia’s swordplay, including Shinto-ryu, Jigen-ryu, and Kurama-ryu 11.
• Identifies that Xia Xia’s copied unarmed techniques conflict with his instinctive habits as a swordsman 15.
• Determines that Xia Xia’s inferior cursed blade cannot support his swordsmanship, correcting his initial judgment that the blade is merely too heavy 15.
• Detects Raikiri’s danger immediately, despite Xia Xia presenting it as an ordinary cursed tool 16.
• Often recognizes when Xia Xia’s apparently friendly behavior contradicts his genuine feelings 16.

Relationships

• Xia Xia — Initially kills him through lightning fallout. Across simulations, becomes his benchmark, opponent, and occasional instructor; their later encounter ends in cooperation rather than mutual destruction 5 15 17.
• Isshin — A swordsman who challenges Kashimo and dies in their duel. His death becomes a central motive for Amabuki Xia Xia’s revenge 8 9.
• Amabuki Dōkō — Xia Xia’s father, killed after abandoning his family to challenge Kashimo 8.
• Kenjaku — Arranged the contract behind Kashimo’s return through incarnation. Kashimo later compares Xia Xia’s disregard for common sense to Kenjaku’s 17.
• Ryomen Sukuna — The opponent Kashimo entered the modern era to fight. He seeks a satisfying battle even if it ends in his own death 5 17.

Story Role / Major Arcs

First Encounter and Historical Revenge

• Kashimo has nearly emptied an area of the colony while collecting points. His lightning kills Xia Xia, whose admiration for his strength unlocks a Cause-and-Effect Reversal simulation centered on Kashimo 5.
• In the historical simulation, Amabuki Xia Xia loses Isshin to Kashimo and begins preparing revenge, initially leaving poisoned tea for him 9.
• After more than a dozen years, Xia Xia ambushes the aged Kashimo. Kashimo releases Mythical Beast Amber through a fatal vow and demands a final duel 10.
• Xia Xia gains immunity to Kashimo’s lightning and delivers Heavenly Origin • Boundary of Emptiness. Death-Bound Curse then sends three fatal slashes across time, eliminating Kashimo’s remaining chance of survival 12.

Repeated Simulations and Raikiri

• In a modern-era simulation, Kashimo kills Xia Xia inside Death-Bound Curse, only to die to its postmortem execution without activating Mythical Beast Amber 14.
• Repeated battles improve Xia Xia’s martial skills. During a friendly spar, Kashimo explains that his weapon is holding him back; Xia Xia then kills him with a one-use, specifically targeted binding-vow slash 15.
• After 140 deaths, Xia Xia succeeds in forging Kashimo’s corpse into Raikiri, a Special Grade cursed tool 16.
• In a subsequent encounter, Xia Xia uses Raikiri’s lightning immunity to overwhelm Kashimo and confronts him with his inability to use Domain Expansion 16.

Leaving Tokyo No. 2 Colony

• Kashimo accepts that the era may have surpassed him but reiterates that his purpose is fighting Sukuna, not proving himself the strongest 17.
• Following Xia Xia’s instructions, spends 100 of his 117 points to add the ninth Culling Game rule: players may freely enter and leave colonies 17.
• Leaves Tokyo No. 2 Colony with Xia Xia, then separates from him with the possibility of meeting again for the Sukuna battle 17.
• Later exorcises a cursed spirit he believes to be at least Grade 1, reaffirming his confidence in martial prowess and Charge Pursuit despite lacking a domain 31.

Legacy: Raikiri

Raikiri is forged from Kashimo’s corpse in a simulation; it is Xia Xia’s weapon, not equipment Kashimo personally wields 15 16.

• Quality: Special Grade 16.
• Demon-Repelling Edge: Carries Xia Xia’s blade-forging technique effect 16.
• Lightning immunity: Protects its equipped wielder against lightning-aspected cursed energy and attacks derived from it 16.
• Automatic Hollow Wicker Basket: Deploys its anti-domain defense upon entering a domain other than the wielder’s own, without requiring Xia Xia to form hand signs 16 38.
• Near-death transformation: Turns the wielder into a cursed energy storm. Ordinary lethal damage cannot kill them until their cursed energy is exhausted, though special means remain effective 16.
• Battle against Yorozu: Its inherited defenses protect Xia Xia inside her domain, and its Mythical Beast Amber effect activates after she inflicts a fatal wound, enabling his final counterattack 38 39.

Notable Quotes

“A warrior follows his heart. Those mundane rules are nothing but cages that imprison heroes like you and me.” 11

“Young people like you might not understand, but aging and illness frighten me far more than defeat or weakness.” 17

“I didn't come to this era to prove I'm the strongest. I just wanted to fight Sukuna.” 17