Who Killed Ai Hoshino

My mom is one of the world's leading AI scientists. Not long after I'm born, she creates an AI companion sister, Nova, designed just for me. She claims Nova is equipped with the world's most accurate lie-detection system. If I ever lie, Nova can surely detect it. From that day on, Nova becomes the judge of my fate. Whenever she issues an alert and declares that I'm lying, it doesn't matter if I'm telling the truth—the only things waiting for me are a hard slap and a trip to the dark isolation closet. I try to defend myself and fight back, but Mom coldly insists that the AI robot she personally built can never go wrong, which only convinces her that I'm a habitual liar. On Children's Day, Mom does something she's never done before. She takes Nova and me on a trip to the amusement park. Looking up at the towering bungee platform, I clutch my chest and desperately shake my head. But Nova coldly pulls up her analysis report. "Tina's abnormal heart rate is from lying. A full-body scan shows that she's in perfect physical health." Mom's expression immediately darkens. She grabs me by the ear and drags me toward the platform. "How dare you lie again? You must jump today!" The moment weightlessness hits, my heart feels like it's exploded. The pain is so intense that I can barely breathe. As my vision blurs, Mom continues her lecture about my terrible lying habit in a disappointed voice. Bloody tears slip from the corners of my eyes. "This time, I'm really not lying, Mom. I'm dead, and I will never lie again."

The prettiest girl in our class, Mandy Smith, died unexpectedly in our dorm. When the police took statements, my two other roommates and I pleaded guilty. I took out Mandy’s love letter to my boyfriend. “I killed her because she was seducing my boyfriend.” Anna Anderson took out a purchase history for cyanide. “I killed her because she snatched my overseas studies spot from me.” Fiona Lee took out an expulsion letter. “I killed her because she reported me for cheating.” All three of us hated Mandy. However, the police found that all of us had alibis during Mandy’s time of death. The counselor also asked us to stop lying. However, the three of us sneered. “Whether you believe it or not, one of us is the murderer.”

As the news broadcast reported a random serial killing near my residential complex, I knew—I had been reborn once again. In my first life, my husband insisted on going out in the middle of a snowstorm to buy weapons for self-defense. I locked every door and window, waiting at home, anxiety clawing at my chest. I never imagined the killer could pick locks. Before I could even react, a blade plunged into me, and I died on the couch. In my second life, I didn't hesitate. I hid in a concealed storage room, holding my breath. But the door was still pulled open. A man wearing a rabbit mask stared straight at me. "Found you," he said. In my third life, I ran to the police station. I rushed inside and told the officer on duty that the killings weren't random—that the murderer was coming for me. They looked at me like I'd lost my mind. Then my husband arrived in a hurry and took me away. But the moment we reached our front door, a heavy hammer smashed into the back of my head. Through the blinding pain, I forced my eyes open, but I never saw who killed me. Now, staring at the grave expression on the news anchor's face, agony surged through every inch of my body. Rebirth isn't a reset. The damage accumulates—and sooner or later, it will torture me to death. Without hesitation, I walked into the kitchen and set a pot of oil to heat. And I waited… for the moment the lock began to turn.

Three years after my death, my wife’s first love was hanging onto life by a thread, and only my system could save him. To force me to show up, she cut off my father’s medical payments. My sick mother was forced to beg her out in the summer heat until she collapsed. She even threw my beloved little sister into a bonfire to be eaten up by the flames. As she waited for me to show up, apologize to her, and use the system to save her first love, my sister finally stopped hiding the truth. “He died three years ago! Three years ago, he traded his life so you would survive that car crash!”

Namih Chan is a detective. She does not believe in the ghost that will return to earth to demand justice. But since Namih Chan lived in her rented house, her perspective changed. Almost every night, she dreams of a bloody woman. She was begging for justice. It doesn't hold her back anymore. Until she decided to reopen the woman's case when she found out that someone had died in the house she was renting, few years ago. She struggled to trace the woman's origin until she met the family. She was asking for cooperation from the family, but they refused. Until she meets the eldest brother who is also a detective. Joojen Lee, a half blooded korean who used to live in the country. She worked with him. Along with her search for justice is the monthly case of murder of a half filipino women in their city. The woman died the same way as Joana was killed. She concluded that the killer of the woman in their city and Joana's killer had something to do with it. Will they succeed in achieving the justice that Joana demands, in exchange for her silence? Are they ready to find out who is the person behind the murders?

The fake heiress, Jean Shore, has left a suicide note prior to taking her own life. In the note, she claims that I'm the one who killed her. In order to make me admit my crime, my parents has sent me to an institution as a human test subject. Every day, I'm forced to endure inhuman torture of all sorts. Needless to say, I'm in so much pain that I choose to secretly take some poison in order to kill myself. But my enraged older brother, Sebastian Shore, saves my life. With bloodshot eyes, he yanks me by the hair while yelling at me. "The pain that you've gone through isn't even a thousandth of the pain Jean had endured! You don't have the right to die!" I can only obey Sebastian numbly. But soon, I get sent to the restricted area. There, my belly swells with life, only for me to lose it some time later. Finally, I've learned my lesson and become docile. No matter what anyone asks me, I keep admitting that I'm a vile woman who has killed Jean. My parents burst into delighted tears. Sebastian can't wait to have me sent to the court, where I will be sentenced for my crime. He tells me, "As long as you admits your crime and go through the punishment, we'll forgive you." I say yes in an obedient manner. I know that my family wants me to be sentenced to death. But what they don't know is that I can't live long enough for the death sentence to be carried out.