Kōzuki Castle

Kōzuki Castle (上月城の戦い, Kōzuki-jō no Tatakai) was the last stronghold of the Amago clan. They were the Mōri's most prominent rivals until they fell in decline. The Mōri launched a final offensive in the year 1578, where the Amago requested assistance from the Oda. This battle is lauded in folklore for the heroics of the Amago general, Yamanaka Shikanosuke.

Role in games
In Samurai Warriors 3, this battle only appears in Motonari's story. Motonari, Muneshige and Ginchiyo besiege the castle controlled by Hideyoshi. There is little reference to the Amago but Motonari manages to break through the Oda encirclement and the tactics of Hanbei and Kanbei. This battle received it's own unique map in Sengoku musou chronicle 2nd.

In Samurai Warriors 4, the battle is an expanded version of the Chronciles map and there is more of an emphasis on the Amago clan. Once the Amago defenses are being whittled slowly and Katsuhisa perishes, the Oda reinforcements arrive and ambush the Mōri, causing Motonari and Takakage to order a withdrawal. Mitsunari, Masanori and Kiyomasa all appear to impede the Mōri Army but their inexperience helps the Mōri salvage the situation. After the battle, Hanbei passes away in ill health causing friend and foe alike to lament.

In Chikai no Sanshi, Kōzuki Castle was designated as the last base of the Amago clan rescue army. In which the player will have to lead the Terumoto and his army to destroy Amago Katsuhisa. In this stage, the player have to watch out for enemy generals who are Shikanosuke, Hisatsuna Tachihara and Iorinosuke Akiage. In addition, the player will have to watch out for Hideyoshi's army that will attack the player's rear.

Historical Information
This battle started when the surviving loyolty of Amago clan has fled to Kōzuki Castle. This caused Mōri to lead an army of 30,000 men in hopes of attacking and wiping out the Amago.

So Amago asked for help from the Oda army under Hideyoshi. Hideyoshi reported this matter to Nobunaga but Nobunaga was interested in suppressing Bessho Nagaharu more than. Causing the Amago to accept their fate in the coming defeat.

The 30,000 men of Mōri has attacked The 3,000 men of Amago. Amago was completely defeated and Amago Katsuhisa commit seppuku. Meanwhile, Yamanaka Yukimori was assassinated along the way, after being arrested by Mōri.