Sizumu

Sizumu is an ancient Kaiju User who existed over five millennia ago, resurrected in the modern era to serve as a key figure within the radical Kaiju Eugenics movement. Driven by an unwavering belief that Kaiju deserve unrestricted freedom above all else, he meticulously crafted the persona of a transfer student to covertly draw close to the protagonists Yume and Yomogi, all in pursuit of awakening the dormant Kaiju core harbored within himself. Outwardly calm to the point of seeming emotionless, he stands as the most ideologically extreme antagonist—one who has merged with Kaiju on a fundamental level.