Recent History

Saikaidō

The island of Kyūshū, treated in this game as the Saikaidō region, lies at the western edge of Japan, closer to Korea, China, and the southern seas than to Kyoto itself. Long a frontier of trade, piracy, religion, and regional warfare, Saikaidō is home to ambitious clans whose struggles are shaped as much by overseas contact as by the politics of the capital.

Two of the region’s most powerful houses are the Ōtomo of Bungo and the Shimazu of Satsuma. Both seek to expand their influence across Kyūshū, but neither can act freely without accounting for rival clans, local warlords, religious institutions, trade ports, and shifting foreign connections. Control of Saikaidō is not merely a matter of battlefield strength; it is a contest over ports, trade routes, legitimacy, and access to resources from beyond Japan.

A new force now threatens to change the balance of power. The Nanban — “southern barbarians” from across the sea — have begun arriving in Japanese ports. They bring strange goods, foreign merchants, Christian missionaries, and powerful gunpowder weapons unlike anything previously available in the islands. To some clans, these foreigners offer wealth, firearms, and new diplomatic opportunities. To others, they represent corruption, religious disruption, and a dangerous challenge to the established order.

In Saikaidō, the future of Japan may be shaped not only by old rivalries, but by how boldly its rulers embrace or resist the world beyond the sea.

Nankaidō

The island of Shikoku, treated in this game as part of the broader Nankaidō region, along with Kii Province, is the original power base of the rising Miyoshi.

The Miyoshi began as powerful retainers of the Hosokawa, one of the great families that had long dominated the politics of the Ashikaga Bakufu. Their fortunes changed after the death of Miyoshi Motonaga, whose destruction was tied to the violent factional struggles surrounding Hosokawa politics. His son, Miyoshi Nagayoshi, has since rebuilt the family’s power and turned against his former masters.

By the start of the game, the Miyoshi have become one of the most disruptive forces in Japan. From their base in Awa and their growing influence across Shikoku and the Kinai, they have broken Hosokawa power, seized control of Yamashiro, and placed Kyoto itself under military pressure.

The Ashikaga government still functions, but it does so under the shadow of Miyoshi force. The court continues to speak the language of order and legitimacy, while the Miyoshi demonstrate a harsher truth: armies near the capital may matter more than titles granted within it.

For the other clans of Japan, the Miyoshi present both a threat and a lesson. They are upstarts who have overturned their superiors, humbled old authority, and shown that the road to Kyoto may be opened by ambition, violence, and opportunity.

San’yōdō

The San’yōdō region follows the southern side of western Honshū along the Seto Inland Sea. It is a region of ports, coastal castles, inland routes, merchant traffic, and powerful warlords whose fortunes are tied closely to maritime trade and military access across the Inland Sea.

At the start of the game, San’yōdō is dominated by the aftermath of the Tainei-ji Incident. The once-mighty Ōuchi house has been shattered after Sue Harukata, formerly one of its leading retainers, turned against his lord Ōuchi Yoshitaka. This betrayal has destabilized the west and left former Ōuchi lands contested between surviving retainers, opportunistic rivals, and rising local powers.

The Sue now claim authority over much of the Ōuchi inheritance, but their position is far from secure. Rule gained through betrayal can be difficult to legitimize, and many clans will be watching to see whether the Sue can truly hold what they have taken.

Among those watching most carefully are the Mōri of Aki. Once subordinate to greater regional powers, the Mōri have become increasingly important in the politics of western Honshū. They must navigate the new Sue-dominated order carefully, balancing survival, opportunity, and ambition while avoiding premature confrontation with stronger neighbors.

The Amago remain a major threat to the north and west. Their rivalry with the Ōuchi and Mōri has shaped the region for years, and the collapse of Ōuchi authority creates new opportunities for renewed conflict. No clan can afford to ignore the possibility that the Amago may return to exploit instability along the southern road.

San’yōdō is therefore a region of uncertain loyalty and dangerous opportunity. The old order has broken, but the new one has not yet been secured.

San’indō

The San’indō region follows the northern side of western Honshū along the Sea of Japan. Compared to the busy Inland Sea coast of San’yōdō, San’indō is more rugged, distant from Kyoto, and difficult to dominate fully. Its mountains, coastlines, and interior routes create a landscape where local authority can be stubborn, fragmented, and hard to suppress.

The most powerful force in the region is the Amago of Izumo. Though pressured by enemies to the south and west, the Amago remain one of the great regional houses of western Japan. Their influence stretches through fortresses, vassals, local alliances, and long-standing rivalries with the Ōuchi and Mōri.

The fall of Ōuchi Yoshitaka has changed the strategic balance. With the Ōuchi weakened and the Sue attempting to claim their inheritance, the Amago face both danger and opportunity. Their enemies are divided, but new powers may rise from the ruins of the old order.

San’indō is also a region where control is rarely simple. Mountain routes, remote castles, maritime links, and local loyalties all complicate the ambitions of great clans. A daimyo may claim authority over a province, but holding roads, castles, ports, and vassals is another matter entirely.

For ambitious clans, San’indō offers defensive strength and strategic depth. For invaders, it offers frustration, attrition, and the danger of overextension.

Kinai

The Kinai is the political heartland of Japan: the region surrounding Kyoto, the Imperial Court, the Bakufu, and the great commercial city of Sakai. No other region carries the same symbolic weight. To control Kinai is to stand close to the machinery of legitimacy itself.

In recent years, the old dominance of the Hosokawa has collapsed under factional conflict, betrayal, and military pressure. In the power vacuum, the Miyoshi have risen from former retainers into one of the most disruptive powers in Japan. Their forces now dominate much of the Kyoto area, allowing the Ashikaga government to continue functioning only under the shadow of Miyoshi military power.

Kyoto remains the ceremonial center of the realm, but its authority is fragile. The Bakufu still issues judgments and claims the language of lawful order, while the Imperial Court still grants rank and recognition. Yet everyone can see that armed force near the capital now matters as much as ancient office.

The merchant city of Sakai has also become a major political and economic force. Wealthy, fortified, and deeply tied to trade, Sakai does not behave like an ordinary castle town. Its merchants can influence politics through money, weapons, supplies, and access to foreign goods.

Kinai is therefore both prize and trap. A clan that gains influence here may claim national importance, but every action near Kyoto is watched, judged, and remembered.

Tōkaidō

The Tōkaidō region follows the great eastern road from the Kinai toward the Kantō plain. It is one of the most strategically important corridors in Japan, linking Kyoto to the powerful eastern clans through a chain of coastal provinces, castle towns, ports, river crossings, and mountain passes.

In recent years, Tōkaidō and the lands beyond it have been shaped by the rivalry of several ambitious powers. The Hōjō dominate much of the Kantō from their base at Odawara, using wealth, fortifications, and political flexibility to expand their influence. To the west, the Imagawa command Suruga and Tōtōmi and remain one of the most prestigious houses of the eastern road. Further inland, the Takeda of Kai push outward through mountain routes and contested borderlands, while smaller clans struggle to survive between greater neighbors.

The balance of power in the east is unstable. Every time one clan appears close to dominance, its rivals look for allies, hostages, marriages, or military opportunities to contain it. Alliances shift frequently, and today’s necessary partner may become tomorrow’s greatest threat.

The Tōkaidō is therefore a region of movement and pressure. Armies can advance along roads and coastlines, but every campaign risks exposing a flank, provoking a coalition, or destabilizing newly conquered Locations. Control of the eastern road may bring wealth and prestige, but it also draws the attention of every clan that fears the rise of a new power.

Tōsandō

The Tōsandō region follows the great inland road through the mountains and interior provinces of central and northern Honshū. Unlike the coastal corridors of Tōkaidō or San’yōdō, Tōsandō is a region of mountain routes, isolated valleys, fortified passes, and stubborn local powers. Armies can move through it, but rarely easily.

In the south and center of the region, the ambitions of the Takeda of Kai have brought increasing pressure against the clans of Shinano. Local houses such as the Suwa, Ogasawara, Kiso, and Murakami have struggled to preserve their independence against Takeda expansion. Victory here is rarely simple; even a powerful clan may find itself slowed by terrain, divided loyalties, and the difficulty of holding mountain territories after conquest.

Further north, the rise of Nagao Kagetora in Echigo has introduced another major force into the politics of the interior. Though still consolidating his authority, Kagetora’s reputation for military skill and personal discipline has already begun to draw attention from rivals and petitioners alike. His position places him near the borderlands between Tōsandō and Hokurikudō, where conflicts in Shinano, Echigo, and the northern mountains may draw many clans into wider war.

Tōsandō is therefore not a single unified political theater, but a chain of contested interior frontiers. It is where ambitious powers test their strength against difficult terrain, local resistance, and rivals who understand that mountain roads can defend a province as effectively as any castle. 

Northern Frontier

The far northern provinces of Honshū lie beyond the immediate struggles of Kyoto, Kinai, and the eastern road. Here, clans such as the Date, Nanbu, Mogami, Ashina, and Andō contend with distance, local rivalries, harsh terrain, and the difficulty of projecting power across wide, thinly connected territories.

To many clans in central Japan, the north may seem remote. That is a mistake. The great northern houses possess land, warriors, horses, trade routes, and ambitions of their own. Their distance from Kyoto gives them freedom, but also limits their access to court politics and central legitimacy.

Northern clans may avoid the first struggles over the capital, but they are not outside history. If the center collapses badly enough, even distant powers may find opportunities to intervene, expand, or claim a role in restoring order.