Sengoku Basara doesn't pretend the Sengoku period was anything but pure adrenaline and chaos. Every warlord is a walking special effect, every clash of armies is cartoonish destruction turned up to eleven, and the show knows this is ridiculous and leans into it hard enough to snap your neck. You watch not for historical accuracy or character depth but because watching Masamune and Yukimura's rivalry explode across a battlefield where physics has signed a waiver is exactly what anime is supposed to do when it stops apologizing for itself.
Warring warlords clash across fractured Japan, each one hungry for absolute power and willing to cut down anyone in their path. Every conqueror wields a signature move that amplifies their destructive power, and each leads a mass of tireless soldiers. For years they have fought each other without end. Then Oda Nobunaga, the feared Demon King of Owari, closes in on total control, and his rivals are pushed toward an uneasy alliance. Masamune Date, the One-Eyed Dragon, and Yukimura Sanada of the Takeda clan admire each other's skill but cannot stop feuding, until they reluctantly agree to fight side by side against the tyrant. What unfolds is over-the-top combat where samurai meet ninja and swords clash with guns, set in the Sengoku period but pushed into fantasy excess.