Episode 1He Drew His Sword. No One Ever Knew WhyThe Pine Corridor Incident
Edo Castle, the 14th day of the Third Month, 1701. Lord Asano is already strained by the great duty of hosting the Emperor's envoys. In the Pine Corridor he suddenly draws his blade on Lord Kira, the master of ceremonies who has been tutoring him in the ritual. Kajikawa happens to be standing there and grabs him from behind, and the blow falls short. Asano tells no one why he did it.
The Pine Corridor Incident Explained: Why Lord Asano Drew His Sword
What happened in Edo Castle in 1701
The story of the 47 Ronin, known in Japan as Chushingura ("the treasury of loyal retainers"), begins with a single violent moment inside Edo Castle, the seat of the Tokugawa shogun. On the 14th day of the Third Month of 1701 (around April 21 on today's calendar), the shogun was due to give his formal reply to envoys sent by the Emperor in Kyoto. It was one of the most solemn ceremonies of the year.
Our best source is a written account by Kajikawa Yosobei, a shogunate official who saw everything up close. That morning he was standing in the castle's long Pine Corridor, talking with Lord Kira, the master of ceremonies. They were discussing gifts that the shogun's wife was sending to the envoys, and the fact that the ceremony had been moved to an earlier time. Suddenly someone came up behind Kira, shouted that he had not forgotten a recent grudge, and cut at him with a short sword. The attacker was Lord Asano, the lord appointed to host the imperial envoys.
Kira turned in shock and was cut on the forehead. As he tried to get away he was struck again and fell face down. Kajikawa threw himself on Asano and held him, and other officials and castle attendants rushed in to help. The blows had sounded loud, but Kira's wounds turned out to be fairly shallow. While he was being held down, Asano kept repeating that he had a grievance against Kira. He said he knew it was wrong to act inside the castle, and on such an important day, but that he had no choice. He never said what the grievance was.
Why did Asano attack Kira? What we know and what we don't
This is the great mystery at the heart of Chushingura, and the honest answer is that nobody knows. Kajikawa's account records Asano's words but not his reasons, and no other reliable source explains them either.
Over the centuries, many explanations have spread. One popular theory says Kira treated Asano with contempt or humiliated him during the weeks of preparation. Another says Kira expected generous gifts for his guidance, and Asano did not give enough. A third claims Kira deliberately gave Asano wrong instructions about etiquette. Other theories point to Asano's own temper or health. All of these are possible, but none can be confirmed from the historical record.
What happened next is documented in other sources. That same day, Asano was handed over to the mansion of another lord, Tamura, and ordered to commit seppuku (ritual suicide). His domain of Ako was confiscated. Kira received no punishment, and Kajikawa was rewarded with an increase in his stipend of 500 koku (a measure of rice income). Drawing a sword inside the shogun's castle was a grave crime, but many people felt it was unfair that only one side was punished. That sense of injustice drives everything that follows: Asano's retainers, now masterless samurai (ronin), would avenge him nearly two years later.
From history to the stage: Kanadehon Chushingura
The best-known version of the story is Kanadehon Chushingura, a puppet play first staged in 1748 and soon adapted for kabuki. Because plays about recent real events involving samurai could get into trouble with the authorities, the playwrights moved the story back to the 14th century. Asano became Enya Hangan, Kira became Ko no Moronao, and Kajikawa's role went to Kakogawa Honzo, a senior retainer of another lord.
Act Three of the play gives the attack the motive that history lacks. Moronao has been trying to seduce Hangan's wife, Lady Kaoyo, and is furious when she turns him down with a poem. Earlier, a bribe from Honzo had softened his anger toward another lord, so he takes his bad temper out on Hangan instead, mocking him as a "fish samurai" (a small, worthless fish). Hangan finally draws his sword and cuts Moronao across the forehead, but Honzo grabs him from behind before he can finish the job.
A famous line, in which Asano begs his captor to let him strike once more as an act of samurai compassion, comes from later storytelling traditions. It appears neither in Kajikawa's account nor in the text of Act Three.
What the manga changes and adds
Episode 1 follows the historical account for the core of the incident: the ceremony day, the Pine Corridor, Kajikawa standing beside Kira, the attack from behind, Kajikawa's grip that stops Asano, and Asano's refusal to explain himself.
Some parts are the manga's own creation. The scenes of Asano and Kira working together before the ceremony are imagined, because Kajikawa only describes the day of the attack. Stories of Kira's cruelty or bribe-seeking are shown as rumors whispered around the castle, not as facts. Asano's expressions and inner thoughts, the image of him watching Kira walk away, and the cherry blossoms in the castle garden are artistic choices; the season fits, but the record doesn't mention blossoms. The "samurai compassion" line is used as a nod to the stage and storytelling tradition. Details like costumes and the painted sliding doors of the corridor, said to show pines and a beach, are based on general references about Edo Castle.
Where to read it
If you came here wondering why Lord Asano drew his sword, the manga lets you stand in the Pine Corridor and feel that mystery for yourself. THE 47 RONIN: Chushingura – A Vow in the Winter Snow is free to read on Manga Portal, with every episode available and no sign-up needed. Episode 1 is where the vow begins, and the rest of the series follows the ronin toward that winter night.
Characters in this episode
Asano Naganori (Lord Asano)
Lord of the Ako domain and host of the imperial envoys, who attacked Kira in the Pine Corridor and never explained why.
Kira Yoshinaka (Lord Kira)
A hereditary master of court ceremony who guided Asano in ritual and was wounded in the attack.
Kajikawa Yosobei
A shogunate official who seized Asano from behind and later wrote the key eyewitness account of the incident.
Enya Hangan
The stage version of Asano in Kanadehon Chushingura, driven to strike after being repeatedly insulted.
Ko no Moronao
The stage version of Kira, a greedy official who mocks Hangan after Hangan's wife rejects him.
Kakogawa Honzo
A senior retainer in the play who grabs Hangan from behind, filling Kajikawa's historical role.
FAQ
Why did Lord Asano attack Lord Kira?
No reliable source says. Asano only stated that he held a grudge against Kira. Popular theories mention insults, unpaid gifts or misleading etiquette advice, but none can be confirmed.
What is the Pine Corridor Incident?
It is the 1701 attack in which Lord Asano cut at Lord Kira with a short sword in the Pine Corridor of Edo Castle on the day of an important imperial ceremony. It led directly to the revenge of the 47 Ronin.
What happened to Asano after the attack?
He was ordered to commit seppuku that same day, and his domain was confiscated. Kira was not punished, which many saw as unjust and which set the stage for the ronin's revenge.
Is Chushingura a true story?
It is based on real events from 1701 to 1703, but famous versions such as the play Kanadehon Chushingura change names, move the setting to an earlier era, and invent motives and scenes.
Did Kira die in the Pine Corridor?
No. His wounds turned out to be fairly shallow and he recovered. He was killed nearly two years later when Asano's former retainers raided his mansion.
