TV-Series
Description
Otomo Sourin is a supporting character in Sengoku Basara: End of Judgement. He is introduced as the young head of the Otomo family, a warlord whose domain becomes closely tied to Zabi-kyo, a newly arrived foreign religion. After encountering the wandering preacher Xavi, Sourin becomes a fervent believer and takes up the cause of spreading the faith, effectively succeeding Xavi as the religion's foremost champion in the Otomo lands.

In terms of personality, Sourin is devout and theatrical, with an enthusiasm for preaching that borders on obsession. He devotes himself to the propagation of his religion and delivers pronouncements with great flourish. His zeal, however, is paired with a streak of impracticality; he issues fanciful and nonsensical orders that bewilder his soldiers and exasperate his closest retainer. He tends to rely on others to do the actual fighting, and when pressed he is quick to call on his subordinates for help rather than confront danger himself.

Within the story of the anime, Sourin aligns himself with Ishida Mitsunari's faction in the struggle against Tokugawa Ieyasu. He takes to the battlefield alongside his retainer Tachibana Muneshige, lending his forces to the western alliance. His involvement in the conflict is driven less by political ambition than by religious fervor and a desire to uphold the legacy of Xavi.

The most significant relationship in Sourin's life is with Tachibana Muneshige, a celebrated warrior of great skill and integrity. Sourin constantly tests Muneshige's patience with his eccentric commands and sharp tongue, yet he clearly depends on the retainer's strength and loyalty. Muneshige, for his part, remains devoted to his lord despite frequent frustrations. The story also suggests a personal bond between Sourin and Xavi; a memory sequence shows the two together, underscoring how deeply the faith shaped Sourin's life.

His most notable ability on the battlefield is control of a massive war machine known as the Head of Xavi, a tank built in the likeness of the late pontiff. The vehicle fires cannonballs from its eyes and even sings a hymn associated with Xavi during battle. Sourin prefers to command from this mobile fortress rather than engage in direct combat, and if the machine is disabled, he retreats rather than fight hand to hand.

In terms of development, Sourin remains largely consistent throughout the series, defined by unwavering devotion to his faith and a constant reliance on Muneshige. His role in the larger war is shaped entirely by his religious identity, and every decision he makes on the campaign reflects his commitment to Xavi's teachings.