Keiji Mogami is infamous as "This Century's Greatest Psychic"—though that reputation came before he died and turned into an evil spirit. These days, he's basically the opposite of everything that title suggests.
The guy's genuinely bitter. He's fed up with how greedy and selfish people are, and honestly, his moral compass got completely wrecked during his time alive through all the shady stuff he was involved in. Now that he's an evil spirit, he's basically weaponized his psychic powers for his own agenda. His whole twisted goal is to "fix" the world by possessing people who've accumulated a lot of grudges—basically using them as vessels for his vision. He's willing to go to brutal extremes to make it happen: destroying a girl's body, impaling her father. He doesn't really care what collateral damage comes with his plans.
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