Metori Saiko, written in kanji as 才虎 芽斗吏, is a prominent PK Academy student born September 8 under the Virgo sign. As sole heir to the Saiko Conglomerate empire, he transfers schools after developing an infatuation with Teruhashi Kokomi. Initially defined by extreme narcissism forged through wealth, he manipulates peers by hiring personal chefs and bodyguards on campus, threatening to acquire their families’ businesses or exile critics to Siberia—though protagonist Saiki Kusuo often thwarts these schemes. Standing 163 cm (5’4”), he flaunts gray hair with black roots, gold earrings, layered rings, and a belt, conspicuously omitting the school’s standard teal coat. His arrogance begins fracturing after pivotal events: a shipwreck where guilt over pressuring employees to sail a faulty vessel makes him reject food, and a 24-hour family challenge to survive without wealth (save a 10,000-yen bill). Forced into commoner life, he finds unexpected satisfaction in walking home, queuing for ramen, and cooperating with classmates. He secretly practices basketball after a loss, shocking servants with his resolve, and refuses meteor evacuation unless friends are safe. Though still funding class plays in exchange for lead roles, he engages in group efforts without financial leverage. His background includes a pre-enrollment private island gift and family resilience rituals like enduring hardship without monetary aid. Key traits include an obsession with his legacy, a gradual shift from materialism to valuing relationships, and stubbornness softened by shared struggles. His name, derived from “psychometry” (サイコメトリー, saikometori), ties to themes of perception. Once antagonistic, he integrates into the class, balancing comedic vanity with vulnerable glimpses of growth.