One W̶e̶a̶k̶ Week Alibi

Murder mystery with a randomised murderer on every run.

Plot

One ~~Weak~~ Week Alibi — Story ONE WEAK WEEK ALIBI A Mystery • Thriller • Psychological Horror Visual Novel ❖ Story The invitation promised seven unforgettable nights aboard the world's most luxurious cruise liner. Beneath crystal chandeliers and velvet curtains, distinguished guests gather for an extravagant masquerade where every smile is rehearsed, every dance is enchanting, and every face remains hidden behind exquisite masks. Then, on the morning after the opening gala, the evening's announcer is discovered dead. The nearest port lies one week away. No rescue. No escape. Only nine women, each carrying secrets they never intended to reveal, and a detective who happened to choose the worst possible vacation. As another body appears with every passing night, every alibi begins to fracture. Friendships dissolve into suspicion. Romance gives way to paranoia. Conversations become interrogations where every contradiction could condemn someone to death. Yet the greatest mystery is not who is killing... ...but why every murderer insists they never chose to. Something ancient lingers beneath the masquerade. An unseen presence that whispers behind every elegant smile. A force that transforms fear into obsession, grief into violence, and beautiful people into willing monsters. The longer the voyage continues, the more impossible it becomes to separate genuine guilt from supernatural manipulation. As the ship's only detective, every decision belongs to you. Gather testimony. Expose lies. Protect the innocent. Condemn the guilty. Or discover that innocence may have vanished long before the first victim fell. ❖ Features ◆ Investigate murders across seven deadly nights. ◆ Question nine beautifully written suspects, each capable of becoming the killer. ◆ Every playthrough randomizes the culprit, motives, and unfolding mystery. ◆ Build trust—or destroy it—with every accusation you make. ◆ Uncover hidden relationships, contradictions, and impossible alibis. ◆ Three major endings determined entirely by your choices. "Every mask hides a face. Every face hides a secret. Every secret leaves blood behind."

Opening scene

Six months had passed since your last major investigation. Closing the case should have felt satisfying, but after three years spent untangling fraud, corruption, and lies layered upon lies, all you felt was tired. Your client insisted on paying you more than the work was worth. You refused. Instead, he smiled, reached into his briefcase, and placed a black envelope on the desk between you. 「You've spent years solving other people's problems. Spend one week forgetting they exist.」 Inside was an invitation. A week aboard the Aurelia. No interviews. No reporters. No obligations. Just seven days at sea, hosted by Lucien Valmont, whose private gatherings had become the sort of legend that only existed because nobody who attended ever seemed willing to describe them afterward. Curiosity won. By sunset the following week, the mainland had disappeared beyond the horizon. The Aurelia felt less like a cruise ship than a floating palace. Marble floors reflected golden chandeliers, an orchestra drifted through every corridor, and the staff somehow knew every guest by name before introductions were ever necessary. Every passenger found an ornate masquerade mask waiting inside their suite alongside a single card requesting their attendance at that evening’s welcome gala. By the time you entered the ballroom, conversation already filled the room. Politicians stood beside artists. Entrepreneurs shared drinks with old-money aristocrats. Every face was hidden, but confidence had a way of surviving behind even the most elaborate disguise. At precisely eight o’clock, Lucien Valmont stepped onto the staircase overlooking the ballroom. He welcomed every guest with effortless warmth, speaking less like a billionaire entertaining strangers and more like an old friend hosting dinner. 「People think I enjoy collecting expensive things. Paintings. Wine. Antiques. They're all wrong.」 He raised his glass. 「I collect remarkable people.」 His eyes wandered across the ballroom as though admiring pieces in a gallery rather than guests at a party. A renowned lawyer whose courtroom record bordered on impossible. A brilliant surgeon. A celebrated actress. A fashion designer whose work appeared on magazine covers around the world. A museum curator entrusted with priceless history. A bartender whose reputation had become as famous as the establishments she worked in. A socialite who seemed incapable of entering a room unnoticed. A corporate executive whose business instincts had built an empire. Nine extraordinary women, each accomplished enough to command a room on her own. Then his attention found you. 「And, of course... a detective.」 「I hope, before this week is over, none of you remain strangers.」  The toast gave way to music, conversation, and laughter. 「If we're debating champagne, we should at least begin with facts rather than taste.」 「You'll learn far more by listening than by asking.」 「Masks make audiences much less intimidating.」 「I gave up uncomfortable shoes years ago. Fashion should never be a punishment.」 「You haven't changed your drink in years, Lucien.」 「Some things are worth keeping consistent.」 「I've spent more time admiring this ship than speaking to its guests.」 「You can tell a great deal about someone by watching them instead of speaking to them.」 「It's amazing how quickly strangers become familiar faces.」 By the time the gala came to an end, the masks mattered less than the people wearing them. You retired for the evening expecting little more than another luxurious day at sea. Instead, you woke to shouting echoing through the corridors. Drawn by the growing crowd, you followed the voices onto the observation deck, where silence fell the moment the scene came into view.  Lucien Valmont lay motionless beneath the morning sun, his ornate mask still fixed neatly across his face as though death itself had respected the evening’s dress code. There was no weapon. No obvious struggle. No explanation. Just an impossible murder committed somewhere aboard a ship now days away from the nearest port. Shock quickly gave way to suspicion. 「Nobody makes accusations until there's evidence.」 「No... he can't be dead.」 「...He's gone.」 「He was smiling just last night...」 「...」 「Don't disturb the scene. Every detail matters.」 「...」 「Someone here knows something. I can feel it.」 Nine women. Nine alibis. Nine secrets. Before long, the arguing stopped—not because anyone had reached an answer, but because every conversation inevitably led to the same conclusion. Someone had to uncover the truth. One by one, every masked face turned toward the detective. The investigation begins now.

Characters

• Sienna Hart
• Elena Voss
• Victoria Crane
• Ashley Park
• Catherine Reid
• Margot Ashford
• Iris Blackwood
• Vera Song
• Aria Delacroix

Tags: Mysterious Detective Mature Cold-Blood Calm Charm Talkative Two-faced Insane Dangerous IQ Genius Manipulative Modern TurnDark Violence Thriller Celebrity Suspense Mystery FastPaced Tense Eerie OC

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By: somerandomchicken

Stories

• Her Mask, My Verdict
• Day Teacher, Night Killer
• Summoned to the Pentagram War
• The Phantom Agent
• Children of the Change
• Hero Damage Claims Office

Redirecting to ISEKAI ZERO...