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· Ryu Ishigori is a character in Jujutsu Kaisen and one of the Culling Game players.
· He is a sorcerer from the early Edo period, known throughout the country as 'The Cannon' for about 400 years.
· He is characterized by his bizarre appearance, sporting a pompadour and a fur jacket, and is a heavy smoker.
· He boasts the highest cursed energy output among all sorcerers and is a strong contender with 77 points in the Sendai Colony.
· He frequently compares combat to meals or sweets, using expressions like 'sweet' or 'dessert,' showing a strong obsession with eating.
· He joined the Culling Game to satisfy an unquenched 'thirst' from his first life and has a belligerent personality, enjoying combat itself.
· While not actively killing non-sorcerers, he is completely indifferent to the damage caused during battles.
· In his fight with Yuta Okkotsu, he showed mutual respect and enjoyment of each other's strength, with Yuta reacting in an unprecedented way.
· He has a poor relationship with Takako Uro, often criticizing each other.
· His name 'Ryu Ishigori' is the name of the human body he acquired; his original name is unknown.
· He never met Hajime Kashimo, who lived in the same era.

· Ryu Ishigori boasts the strongest cursed energy output among Culling Game players, including Yuta Okkotsu, earning him the moniker 'The Cannon.'
· While Satoru Gojo has superior cursed energy efficiency and Yuta Okkotsu has a greater total amount of cursed energy, Ishigori's pure cursed energy output is overwhelming.
· His close-quarters combat ability, enhanced by cursed energy, is also exceptional, capable of blowing away Rika in her fully manifested state head-on.
· Even Sukuna highly praised his defense, explicitly stating that his pure cursed energy defense is superior to Okkotsu's and Rika's.
· With just close-quarters combat and cursed energy output, he surpasses Okkotsu's maximum output while connected to Rika, earning him a rating equivalent to a Special Grade sorcerer.
· In terms of rank, he is considered equivalent to a Grade 1 sorcerer as he cannot overthrow a nation, but his pure combat power is the strongest in the Sendai Colony, excluding Okkotsu.
· He is presumed to have an advantageous matchup against Dhruv and a disadvantageous one against Uro, who distorts space.

· Ryu Ishigori possesses a cursed technique that releases cursed energy, but he can also use cursed energy blasts without it.
· He can unleash high-power attacks even without his cursed technique, but it achieves greater destructive power when used.
· The advantage of his cursed technique is that even if it burns out after a Domain Expansion, his attack power remains almost unchanged.
· Granite Blast (グラニテブラスト):
· A technique that fires cursed energy attacks from the tip of his pompadour.
· Based on the highest cursed energy output among Culling Game players, it boasts immense destructive power and range.
· The attacks have various variations, including localized concentration, beams, and homing projectiles.
· In the anime, it was also used to increase power by firing into the air or to restrict an opponent's movement.
· His head acts as a fixed turret, allowing him to attack even during close-quarters combat.
· Continuous use causes overheating, disheveling his hair, and requires him to comb it to reset for reuse.
· 'Granite' (グラニテ) is French for a sorbet-like iced dessert used as a palate cleanser, aligning with his 'dessert' preference.
· Despite being an Edo period figure, his use of a Western technique name suggests he might have been influenced by French culture through interactions with the envoy dispatched by Date Masamune in 1615.

· Ryu Ishigori can use Domain Expansion, but its name and specific abilities are unknown.
· This is because when he attempted to use Domain Expansion, Takako Uro and Yuta Okkotsu also simultaneously deployed their domains, leading to a clash of three domains, and the intrusion of Kurourushi caused the Domain Expansion to fail.
· His domain is presumed to be an ability that makes 'Granite Blast' a sure-hit, sure-kill technique.
· In the anime, Ishigori's domain was depicted as a 'fireworks space,' which suits him well given that Japanese fireworks originated in the Edo period and 'Granite Blast' is a technique that shines like fireworks.

· In the Sendai Colony, he was caught in a four-way stalemate with Dhruv, Uro, and Kurourushi.
· After Yuta Okkotsu defeated Kurourushi, Ishigori became obsessed with him and challenged him to a fight.
· Amidst the three-way brawl with Okkotsu and Uro, he became greatly excited by his fight with Okkotsu.
· He attempted a simultaneous three-person Domain Expansion but failed due to Kurourushi's intrusion.
· Afterward, he knocked out Uro with 'Granite Blast' and engaged in a final battle with Okkotsu, who had defeated Kurourushi.
· He confirmed his fierce fight with Okkotsu as his 'dessert' and felt satisfied.
· He was defeated when his own attack was reflected back by Uro's cursed technique, which Okkotsu had copied, causing his entire body to burn.
· He survived along with Uro by transferring his points to Okkotsu due to the added Culling Game rule.
· However, he made a bitter expression when Okkotsu told him, 'If there were no rules, you would have died.'
· Later, he confronted Sukuna (in Yuji Itadori's body) who had invaded the Sendai Colony.
· He withstood Sukuna's 'Dismantle' with only superficial wounds, but in the next moment, his head was severed by 'Cleave' and he died.
· Some evaluate that he would have met a more glorious end if he had died without regret when defeated by Okkotsu.
· Hajime Kashimo, a sorcerer from the same era, was also killed by Sukuna.

· Ryu Ishigori was a character who served as the de facto boss of the Sendai Colony.
· His intense appearance and unique personality left a deep impression on readers.