Sengoku BASARA: Samurai Kings

Two of the mightiest warlords of ancient Japan, Takeda Shingen and Uesugi Kenshin, set aside their rivalry to unite against the forces of Date Masamune.

Sanada and Date rush to claim the same prize: Imagawa’s head. A clash erupts between the two warriors, but before one can declare victory, their battle is interrupted by a horrifying presence.

Free-spirited Keiji hopes to build an alliance against the threat of the Demon Lord. His visit with Uesugi ends on a promising note - but his meeting with Date Masamune leads to a battle.

Taking place moments after the last episode of season 1, the other surviving warlords return to fighting against each other, with Masamune, Shingen and Kenshin's forces are engaged in a three way battle at Kawanakajima, including Date Masamune and Sanada Yukimura locked in battle. However they find themselves surrounded by the soldiers of Toyotomi Hideyoshi who seeks to unite Japan and help it grow into a strong country. Masamune, Shingen and Kenshin's forces manage to escape. Maeda Kanji who has been aware of Toyotomi's apperance arrived too late. Keiji then visits Maeda Toshiie and Matsu, aware of their alliance with Toyotomi Hideyoshi and asked why, which he replied that he agreed with Hideyoshi that the country is being weakened due to Oda Nobunaga's activities, but also agrees that he would be like him if he lost Matsu just as Hideyoshi's lost his beloved. Maeda also request Keiji to join them due to his history with Hideyoshi being his friend, but refuses and left. Souske reports to Shingen of Utsunomiya and Odawara have fallen by Toyotomi and placing his spies in their ranks and others and Mori's alliance with Toyotomi, having Shingen to have Sanada go to the west to Satsuma and protect Kyushu alonside forces there. In Oshu after news of Toyotomi's activities and suspecting a spy in Date's forces, Kojuro is confronted by Toyotomi's general, Takenaka Hanbei, and was offered to make him one of Toyotomi's men while Hanbei's spies and men took two people hostage.

When Hanbei offered Kojuro the offer to become Toyotomi's men he refused and starts attacking while defending the hostages, however he was beaten and knocked unconscious. The next morning Date's men report on an assault from Nambu, Tsugara, and Soma, but also revealed Kojuro's captured and leaving behind his sword, shocked Date while holding it. Keiji visits Uesugi Kenshin and discuss about Toyotomi and Mori's decision to ally with him, as well as concerning about Motochika, but Keiji was surprised by Kasuga about Maeda's army approaching Echigo to fight against Kenshin and his army. In Oshu, Date manages to defeat most of the soldiers and confronts Hanbei. As both sides fight, Hanbei successfully hits Date with his sword but retreats when more of his men arrived, leaving Date at a disadvantage. Hanbei returns to Osaka castle and meets with Hideyoshi to discuss with the plan and departs to Aki to complete the alliance with Mori.

With news of Toshiie and Matsu leading the Maeda army to Echigo, Keiji tried to block their path and convince them to stop but failed as the Maeda army went past him. Kasuga arrived and tell Keiji to leave as both forces prepared to fight. Toshiie and Matsu meets with Kenshin, leading only a small force, which puzzled him until Kenshin revealed a large force of his is heading to Kaga, forcing Toshiie to defeat him and claim control of Echigo or return to Kaga and protect his people. Frustrated to prove Hideyoshi and Hanbei belief but fearing Matsu's safety, Toshiie has no choice but to return to Kaga. The two arrived and met with Kenshin's forces in Tetorigawa but were surrounded, however Toshiie is determined to protect Kaga and led his forces to attack. As the two forces fight, Keiji confronts Toshiie and Matsu, knowing if the Maeda army won mean Toyotomi's forces victory, leading Keiji to have no choice but to stop Toshiie and both he and Toshiie start fighting while questioning their motives. As both fighters face each other in full force Keiji successfully defeated Toshiie but is confronted by Matsu to fight. Kenshin, who has witness the fight, arrived at the scene and tells Matsu to retreat and acknowledge Toshiie's reasons to join Toyotomi for peace. In the battlefield to defend Oshu and most of his men survived, Date is confronted by Hideyoshi and the two fight. While Sanada is travelling with his new ally, Oyamada, and a small group of Takada forces in Oumi he hears a cry and recognize it as Oichi in Azuchi castle.