Regret…A word so bitter on the tongue, yet too late to undo. A weight that gnaws at the soul, a relentless reminder of the wrong choices that can never be taken back.Regret is realizing that the wounds you’ve inflicted on someone will never truly heal—no matter how many times you beg for forgiveness.Regret is the ghost of the past that haunts you, teaching you that “sorry” is never enough to atone for your mistakes.And the most painful regret? It’s understanding someone’s worth only after they’re gone, leaving you with nothing but useless remorse.I know this…How?Because I am the one who tamed the Heroines.I manipulated every emotion inside them.I am the one who exploited the most devastating emotion of all…Regret.-----Additional tags: No Ntr/Yuri, Hard Working MC, Revenge, Progressive Growth, MC slowly corrupts into a Villain, Suffering MC who can never catch a break, Slow build up Harem no BS like “omg! you cool and badass be me boyfrind”-----For readers, just a heads up, there's no smut or lemon here. Right now, at least. Maybe way later, like hundreds of chapters in, I might add some. But from the early to mid chapters? Zero smut.So if you're here expecting spicy stuff, you might as well skip this novel or give it a try. Here, the MC only uses hypnosis for self-improvement… and to manipulate people around him.