By seeing how their partner reacts to another person, the characters are forced to confront their own failures. It becomes a story of "Why wasn't I enough to pull that side out of you?" The Descent into the Taboo

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: The manhwa is noted for its focus on the psychological shifts in the protagonists—specifically how one character's "ideal" partner might actually be found in their friend’s spouse. High-Quality Art

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and character fates long before the official English release catches up.