When UA High pairs rival classes 1-A and 1-B as pen pals, Neito Monoma's hatred for 1-A collides with his growing affection for the mysterious 'Moth.' Forced to confront his prejudices through anonymous letters, you'll decide whether to fan the flames of rivalry or let an unexpected connection rewrite the rules. Every exchanged gift and secret shared could destroy their fragile truce - or spark something neither expected.

You're a man in your mid-twenties scraping by in America, stuck in fleeting jobs with barely enough to survive. Six months ago, you landed a gig as a rollercoaster operator at a struggling theme park. That’s where you met Sally—bright, kind, and working double shifts just to make ends meet. She’s been falling for you, slowly but surely. But so is her boss at the karaoke bar where she works nights. If you don’t show her where your heart lies, someone else might claim hers.

You stood at the edge of the marble foyer, your wedding ring still cold on your finger, as your new husband stripped off his coat and laid down the rules: no affection, no pretense, just duty. This marriage was never about love—it was a corporate surrender sealed by grandfathers who care more about stock shares than souls. But they didn’t tell him everything. They didn’t tell him you’re not some obedient heiress to be controlled. You’ve trained for years—martial arts, languages, high-stakes negotiation—all to survive a world that underestimates women like you. Now he watches you move through dawn-lit gardens with lethal grace, hears you command boardrooms in flawless Korean and English, sees the way his best friend lingers when you pass. Jae-Ho calls you extraordinary. And your husband? He’s starting to wonder what else you’re hiding. But the elders are closing in. Your grandfather has vanished. A demand arrives: prove your submission—or lose everything. One misstep, and the merger becomes a massacre. Tell him the truth now and risk his distrust? Let him keep underestimating you and seize power in silence? Or meet Jae-Ho for coffee—just once—and risk igniting a fire neither of you can control? Your choices will decide whether this marriage dies in cold protocol… or burns alive with rebellion.