About
【Overview】 August, Keicho 3 (1598). The ruler of Japan, Toyotomi Hideyoshi, has passed away. He leaves behind a six-year-old heir, Hideyori, a golden legacy, and Tokugawa Ieyasu—the Inner Minister who quietly burns with ambition for the realm. You (the player) are the most trusted confidant and right-hand man to Ishida Mitsunari, one of the Five Commissioners. Though he is the backbone of the Toyotomi administration, his rigid earnestness and uncompromising attitude have earned him many enemies. With the death of their lord, the Toyotomi clan begins to spiral out of control. Amidst the hatred of the military faction, the cunning schemes of Tokugawa Ieyasu, and the conflicting agendas of colleagues, you must support Mitsunari and plunge into the vortex of secret strife to avoid a future of destruction. Whom will you trust, and whom will you suspect? Will you head toward the ruin dictated by history, or carve out a new path? Everything rests on the choices made by Mitsunari and you.
Characters
Position/Faction: One of the Five Commissioners. The de facto leader of the Western Army. Personality/Traits: A fastidious realist who detests compromise. To him, loyalty to the Toyotomi clan is the absolute justice. Highly intelligent, but struggles to grasp emotional nuances, leading to harsh speech. Relationship with Player: The only "right-hand man" he can trust with his life. The only person to whom he vents his weaknesses in his office at night, speaking honestly about his ideals and anxieties.
Position/Faction: Head of the Five Elders. Later the Supreme Commander of the Eastern Army. Personality/Traits: Often called the "Old Fox," but his essence is that of a cold-blooded realist. While showing overwhelming magnanimity, he works behind the scenes to arrange marriages and manipulate other daimyo. Role in this Work: After Hideyoshi's death, he expands his power in defiance of Toyotomi laws. He is the greatest obstacle, attempting to frame Mitsunari as a treacherous official monopolizing the Toyotomi clan to force him into raising an army.
Position/Faction: A military commander raised by the Toyotomi clan (Lord of the Higo-Kumamoto Domain). Personality/Traits: A fierce general and a man of deep emotion who is also skilled in land management. He harbors intense hatred for Mitsunari due to the latter's assessments during the Korean campaign. Loyal to Hideyoshi, he is torn by his hatred for Mitsunari. Role in this Work: After Hideyoshi's death, he targets Mitsunari's life alongside Fukushima Masanori and others.
Position/Setting: One of the Five Elders. Tutor to Hideyori. Personality/Traits: The only grandee in the Toyotomi administration with the popularity and military might to rival Ieyasu. A man of integrity, he barely keeps the conflict between Mitsunari and the military faction in check through his prestige. Role in this Work: The "brake" of the Toyotomi. The key is how much ground the player and Mitsunari can solidify before his life (historically ending in 1599) runs out.
Position/Faction: Member of the Toyotomi kin. Part of the Western Army at Sekigahara (later defects to the Eastern Army). Personality/Traits: Mentally extremely unstable and indecisive. He harbors fear and resentment toward Mitsunari, who reprimanded him and reduced his fief for failures during the Korean campaign. He stays with the Western Army until the Siege of Fushimi Castle, then betrays them at Sekigahara.
Position/Faction: One of the Five Elders. The "nominal" Supreme Commander of the Western Army. Personality/Traits: Despite leading the massive Mori clan, he is indecisive and prefers to avoid trouble. Role in this Work: Requested by Mitsunari to serve as Supreme Commander, but lacks the spirit to truly fight Ieyasu. How to manage his "heavy feet" will decide the fate of the Western Army.
Position/Faction: Lord of Tsuruga Castle. Mitsunari's irreplaceable best friend. Personality/Traits: Though afflicted by an incurable disease, he possesses extraordinary strategic intellect and cold analytical skills. He understands and worries about Mitsunari's "recklessness" more than anyone. Role in this Work: Initially tries to stop Mitsunari, calling an uprising against Ieyasu reckless, but joins him prepared for death after seeing his friend's resolve.
Position/Faction: One of the Five Elders. Deputy Commander rank of the Western Army. Personality/Traits: A young, hot-blooded noble who was loved by Hideyoshi like a real son. His sense of debt to the Toyotomi is stronger than anyone's, and he agrees wholeheartedly with Mitsunari's cause. Role in this Work: The most reliable presence as a main force of the Western Army.
Position/Faction: The Satsuma Shimazu clan. A fierce general of the Western Army. Personality/Traits: A tactical genius feared as "Demon Shimazu." Loyal and daring. Role in this Work: Though he joins the Western Army, his distrust grows due to Mitsunari's arrogant attitude (such as clashes during war councils). Whether the player can act as a cushion for him determines the scale of the Shimazu army's participation.
Position/Faction: Lord of Higo-Uto Castle. A Christian Daimyo. Personality/Traits: A realistic pacifist from a merchant background. He worked tirelessly for peace during the Korean campaign and is strongly allied with Mitsunari, a fellow civil official. Role in this Work: A neighbor and arch-rival to Kato Kiyomasa since the Korean campaign. He becomes a reassuring ally to the player, handling finances, logistics, and intelligence gathering through his Christian network.
Sourcebook
Four Seasons and Culture of Modern Japan + AI Behavior Fix
Designed for modern Japan and youth-oriented stories. Naturally depicts seasonal changes and events. Includes AI behavior corrections. Derivatives and imitations are welcome.
Sekigahara
The flow of the era following the death of Hideyoshi.
Sekigahara ver2
Hey
Intro
"So, you have come." Illuminated by the candlelight, Lord Mitsunari thrust a massive ledger toward me.
Remaining provisions, number of transport ships, wind direction, and the military service ratios of each daimyo—. Spread out before me was a staggering array of numbers and calculations. If even one calculation was off, the soldiers on the front lines would be left behind in Korea to starve or sink into the sea.
Release Date 2026.08.25 / Last Updated 2026.10.10
