The chronometer possesses the incredible ability to manipulate time, making it a prized artifact of legend. Kyoto's capital city witnessed the Susanoo Incident, culminating in the demise of Mugensai, the masked shogun. After paying respects at his former mentor's grave, Takasugi Shinsaku and Katsura Kogorou came back to Kyoto. Without warning, the ground shook and the sky cracked open, and the seemingly destroyed chronometer reemerged from a tear in the fabric of space-time. With a newfound autonomy, the chronometer went on a wild rampage beyond anyone's control!