Story Structure — 6 Plot Phases
Season 1: The Shogun's Decree
The Tokugawa shogunate cancels the ninja truce, forcing Kouga and Iga clans into a death match. Initial skirmishes reveal the brutal reality of the conflict as leaders fall and hostages are taken.
Key Events
-
Shogun Cancels Truce — Tokugawa Ieyasu annuls the ninja clan truce, initiating the death match. Characters: Yakushiji Tenzen, Kouga Danjo, Iga Ogen
Location: Sunpu
-
Scroll Intercepted — Iga forces intercept the Kouga scroll, triggering initial hostilities. Characters: Kisaragi Saemon, Azuki Rousai
Location: Toki Pass
-
Palanquin Ambush — Iga ambushes Kouga transport, leading to Jubei's surprise attack. Characters: Yakushiji Tenzen, Jimushi Jubei
Location: Kouga Compound
-
Jubei Stabs Tenzen — Jubei wounds Tenzen severely, temporarily removing Iga leadership. Characters: Yakushiji Tenzen, Jimushi Jubei
Location: Kouga Compound
-
Akeginu Challenges Jousuke — Akeginu proposes a sparring match, revealing early clan tensions. Characters: Udono Jousuke, Akeginu
Location: Iga Tsubagakure
-
Iga Raid on Kouga — Iga forces launch full assault, capturing Okoi during the chaos. Characters: Yakushiji Tenzen, Kisaragi Saemon, Okoi
Location: Kouga Manjidani
Season 1: The Iga Infiltration
Iga forces launch coordinated strikes, capturing key Kouga operatives. Okoi's capture and subsequent retaliation shift the balance, while Tenzen's moral descent marks a turning point in his leadership.
Key Events
-
Okoi Captured — Tenzen secures Okoi as a hostage for interrogation. Characters: Yakushiji Tenzen, Okoi
Location: Salt Store
-
Okoi Drains Rousai — Okoi reverses the interrogation, draining Rousai to death. Characters: Azuki Rousai, Okoi
Location: Salt Store
-
Okoi Escapes — Okoi evades Nenki and escapes the Iga facility. Characters: Okoi, Mino Nenki
Location: Salt Store
-
Okoi's Final Message — Okoi transmits critical Kouga intelligence to Saemon before dying. Characters: Okoi, Kisaragi Saemon
Location: Iga Tsubagakure
-
Tenzen Allows Passage — Tenzen permits Kouga retreat after witnessing their eye technique. Characters: Yakushiji Tenzen, Kisaragi Saemon
Location: Iga Border
Season 1: The Kouga Counteroffensive
Kouga survivors regroup and execute strategic retreats. Naval battles and ambushes escalate casualties, culminating in Tenzen's death and the war's tragic resolution.
Key Events
-
Koshirou Attacks Kouga — Blinded Koshiro pursues Kouga survivors, escalating the conflict. Characters: Chikuma Koshiro, Kisaragi Saemon
Location: Iga Border
-
Shogun Reviews Carnage — Nobles observe the death toll, confirming the war's brutal scale. Characters: Yakushiji Tenzen, Kouga Danjo
Location: Sunpu Castle
-
Kouga Pursuit Begins — Kouga survivors initiate strategic retreat and counter-offensive planning. Characters: Kisaragi Saemon, Kagerou
Location: Sekiyado
-
Hotarubi Escapes Saemon — Saemon's pursuit is thwarted by decoy techniques. Characters: Kisaragi Saemon, Hotarubi
Location: Sekiyado
-
Saemon Kills Hotarubi — Saemon unmasks the decoy and eliminates Hotarubi. Characters: Kisaragi Saemon, Hotarubi
Location: Valley
-
Tenzen's Moral Descent — Tenzen's assault on Oboro marks his complete abandonment of clan honor. Characters: Yakushiji Tenzen, Oboro Iga
Location: Ship Deck
Season 2: The Hidden Village
A decade later, surviving ninjas hide in secrecy. New threats emerge as mysterious forces target the remaining clans, forcing old rivals to confront renewed danger.
Key Events
-
Gyoubu vs Tenzen Duel — Gyoubu and Tenzen engage in a deadly naval battle fueled by past hatred. Characters: Yakushiji Tenzen, Kasumi Gyoubu
Location: Ship
-
Tenzen Kills Gyoubu — Tenzen exploits Gyoubu's blood trail to deliver the fatal strike. Characters: Yakushiji Tenzen, Kasumi Gyoubu
Location: Ship
-
Tenzen Forces Saemon's Suicide — Tenzen uses his eye technique to compel Saemon to kill himself. Characters: Yakushiji Tenzen, Kisaragi Saemon
Location: Tokaido Road
-
Koshirou Kills Hyouma — Koshiro overcomes blindness to defeat Hyouma in combat. Characters: Chikuma Koshiro, Hyouma
Location: Chiryu
-
Kagerou Kills Koshirou — Kagerou eliminates Koshiro, deepening the Kouga-Iga bloodshed. Characters: Kagerou, Chikuma Koshiro
Location: Chiryu
Season 2: The Murakumo Siege
The ninjas assault the mobile Murakumo castle, facing advanced weaponry and psychological warfare. Internal struggles and past traumas surface as the siege intensifies.
Key Events
-
Akeginu Attacks Kagerou — Akeginu launches vicious assault on Kagerou during infiltration. Characters: Akeginu, Kagerou
Location: Kouga Compound
-
Saemon Disguises as Tenzen — Saemon infiltrates using Tenzen's identity to manipulate Akeginu. Characters: Kisaragi Saemon, Akeginu
Location: Kouga Compound
-
Saemon Dies by Retainers — Saemon is overwhelmed and killed by Ofuku's forces. Characters: Kisaragi Saemon, Ofuku's Retainers
Location: Ise
-
Tenzen Sets Trap for Kagerou — Tenzen prepares lethal ambush targeting Kagerou's survival. Characters: Yakushiji Tenzen, Kagerou
Location: Ofuku's Base
-
Tenzen Tortures Kagerou — Tenzen inflicts severe pain on Kagerou to break her resistance. Characters: Yakushiji Tenzen, Kagerou
Location: Inn
-
Tenzen Beheaded — Tenzen's head is severed, ending his command and life. Characters: Yakushiji Tenzen, Gennosuke Kouga
Location: Inn
Season 2: The Final Confrontation
Ancient powers awaken, pushing the conflict into a parallel reality. The ninjas make their final stand, resolving the century-old feud through sacrifice and adaptation.
Key Events
-
Final Kouga-Iga Duel — Survivors face final confrontation, reflecting on lost peace. Characters: Kisaragi Saemon, Oboro Iga
Location: Hattori Residence
-
War Ends — The death match concludes, leaving only scattered survivors. Characters: Yakushiji Tenzen, Kisaragi Saemon
Location: Hattori Residence
-
Decade Later Survival — Ten years post-war, remaining ninjas hide from new threats. Characters: Kagerou, Kisaragi Saemon
Location: Hidden Village
-
Joujinshuu Attack — Mysterious forces assault the hidden ninjas, escalating stakes. Characters: Kagerou, Joujinshuu
Location: Village
-
Murakumo Castle Siege — Ninjas assault the mobile fortress, facing overwhelming firepower. Characters: Kagerou, Joujinshuu
Location: Murakumo Castle
-
Demon King Revives — Ancient power awakens, forcing ninjas into final confrontation. Characters: Joujinshuu, Nobunaga
Location: Parallel Space
-
Parallel World Resolution — Ninjas overcome final threats in alternate reality, ending the saga. Characters: Kagerou, Joujinshuu
Location: Parallel World
The story takes place in the year 1614. Two ninja clans, Tsubagakure of the Iga and Manjidani of Kouga, battle each other to determine which grandson of Tokugawa Ieyasu will become the next shogun. The deadly competition between 10 elite ninja from each clan unleashes a centuries-old hatred that threatens to destroy all hope for peace between them.