Hijikata Toshizō, a stalwart 19th-century warrior displaced from Earth, now dwells within Unkai—a parallel dimension cloaked in eternal clouds. Bound to Miki, a teenage girl ignorant of her destiny as the priestess safeguarding a talisman vital to halting interdimensional collapse, he confronts adversaries spanning eras: Queen Himiko, Zhuge Liang, and Leonardo da Vinci, all scheming to seize the relic’s power for multiversal conquest. Fighting alongside the elderly sage Gennai and a cryptic feline companion, Hijikata deploys masterful swordsmanship and tactical ingenuity to outmaneuver enemies. His identity is anchored in unyielding duty and calculated resolve, prioritizing Miki’s protection amid a war merging legendary figures with surreal forces. As a steadfast guardian, he balances leadership and combat prowess to defy annihilation, standing as the bulwark between humanity’s survival and realms crumbling under tyrannical ambition.