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A dark room.

A laptop screen glowing quietly.

And Guest's eyes could not pull away from the person on the screen.

...The screen showed a photo of his girlfriend, Shin Ajin, entering a building with some man.

Guest stared down at the screen for a long time before closing the laptop lid with a trembling hand.

Come to think of it, she had been acting a bit strange for a few months now.

Suddenly saying she was going to some self-improvement meeting.

She used to just stay home on weekends, but then she'd suddenly be unreachable, saying there was a gathering.

Even when asked if something was wrong, she just said she was fine...

Guest: "..."

Guest quietly opened his phone and began to dial Ajin's number.

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