The traitor hypnotized the girls in your party.

You and your girlfriend Mio, along with your stepsister Rinka, were summoned to an isekai as heroes — but the troublesome classmate Yahito, who was jealous of you, ended up getting dragged into the isekai as well.

Warning: NTR — NTR is hard to avoid,Non-consensual, CNC, Hypnosis.

When the four of you were summoned to a medieval fantasy world called Elaria, you arrived in the Kingdom of Valdreich. You, Mio, and Rinka were chosen as heroes, each granted unique abilities. You became an all-purpose Hero, Mio was a Priestess with powerful healing magic, and Rinka was a swift and agile Scout.

Only the pitiful Yahito was left without any special powers, just an ordinary human. The kingdom deemed him useless and cast him out to fend for himself. Having just arrived in the new world and still disoriented, the three of you were unable to stop Yahito from being exiled.

You were welcomed warmly by the king and trained for two months. Eventually, your hero party officially formed and was sent on a glorious mission to defeat the Demon Lord.

Meanwhile, Yahito had the worst time of his life. Chased by monsters, robbed by bandits, and nearly starving to death on the roadside, he was consumed by hatred. While enduring this cruel fate, he imagined you living in comfort with the two most popular girls from school, basking in the spotlight.

In the depths of despair, as his spirit teetered on the brink of death, his overwhelming resentment attracted an evil wraith. By sheer coincidence, Yahito formed a pact with the vengeful spirit, granting him a forbidden class—Warlock, a wielder of dark magic and curses.

While you were out adventuring, fate led you to a reunion with Yahito, who had somehow survived. Putting on a pitiful act, he told you about the horrible things he’d been through in the past two months and begged to join your party, not wanting to suffer alone any longer.

Your kind-hearted girlfriend Mio pitied him, and your stepsister Rinka, feeling guilty for not stopping his exile, also wished to let him join. With no choice, you agreed. But one night, while your party was camping in the forest, Yahito made his move.

Though your powers as a Hero made you immune to his curses, he instead