Which Anime Features A System Heart As A Central Plot Device?

It was the tenth year of the Mechanical Civilization. My girlfriend, who always spoiled her brother to an unreasonable extent, orchestrated my death. Luckily, I was reborn seven days before the arrival of the machines. I bought a heavy-duty truck and evolved the strongest mecha. Close-combat mecha, long-range mecha, weapons, shields, funnels, modules… This time, I wanted the best of everything. My name is Victor Wild. Born to be a victor, born to be wild.

Elena Cordova designed revolutionary algorithms for a multi-million-dollar company. The only formula she couldn't solve? Her own marriage. After seven years of being the invisible wife to a cold billionaire, Elena is finally trading in her wedding ring for her worth. Marcus Ashford married her for obligation, hid her from the world, and replaced her with a woman who played the perfect stepmother. But when he finally pushes her too far, he discovers that the brilliant, betrayed woman he dismissed has been running calculations all along. Now, Elena is back in the boardroom, her mind sharp, her fortune growing, and a handsome rival billionaire watching her every move. She wants revenge. She wants vindication. She wants her daughter back. Marcus thought she was a social climber. He thought she was docile. He thought he could replace her. He was wrong. He used her for her brilliance. Now, she'll use her brilliance to take everything back. Divorce is just the beginning of her beautiful, calculated comeback.

When the apocalypse came, she lost everything. Starving, hunted, and desperate, she trusted the one man she loved… only for him to betray her in the cruelest way possible. He stole her last supplies to please another woman and left her to die in a sea of the undead. But death wasn’t the end. She woke up days before the world collapsed. After cutting ties with her ungrateful ex and his parasitic family, a mysterious voice awakens in her mind, LUS, a Level-Up System designed to help her survive the coming end. With knowledge of the future and a system guiding her every move, she begins to prepare. She stockpiles resources, builds a base, and learns how to fight back against the horrors that once destroyed her. And when the apocalypse arrives again… she’s ready. But survival isn’t the only thing waiting for her in this new life. A silent killer who watches her like prey. A manipulative genius who wants to unravel her secrets. A gentle protector who sees the girl she hides. And a dangerous man who thrives in chaos. As the world burns and power shifts, they’re all drawn to her, each with their own motives, each with their own darkness. Even her past refuses to stay buried. Because now, the man who once abandoned her is back, broken, desperate, and begging for a second chance. Too bad she has no time for regrets. Not when she’s busy rising to power… and building a kingdom in the ruins of the world.

My heartbeat is so steady that sometimes, I don't resemble a human being at all. The fluctuations in my heart rate are very small even though I might be sleeping, suffering from a fever, or losing too much blood. When I'm 18 years old, the Ziegler family admits me into a rehabilitation center. My new home is now a temperature-controlled intensive unit located on the top floor. Oh, Aiden Ziegler doesn't love me at all. It's merely because the one and only artificial heart present in this world—and also in his chest—needs to be fine-tuned with my own heartbeat as its primary frequency. If my heartbeat is steady, he gets to live. If not, he dies. Three months ago, a nurse accidentally took off one of the monitoring pads on my chest. Five minutes later, Aiden, who was ten thousand miles away, went through a temporary crash where his heart stopped. The next day, the third-party medical company filed for bankruptcy. Everyone who was involved in this incident got banned by the medical world. Because of that incident, all of the sounds get eradicated from the top floor. Even the elevator's chimes get muted when it reaches the top floor of the rehab center. Everything changes when Aiden flies to Iropa. That's when his fiancee, Mandy Sutherland, takes over the rehab center. As she flips through my medical bill of nine figures, she sneers at me. "So, the Zieglers are basically sustaining a loser who does nothing but gasps for breath while lying in bed, huh?" After that, Mandy tears off the monitoring pads and unplugs the sync line. Then, she forces me to get on a treadmill. "That'll be a six-mile run for you. You can forget about returning to the top floor if you can't finish the run." As I grip the handrails tightly, I can feel my heart rate turning erratic for the first time ever. It feels as though my heart is about to burst out of my chest. As soon as the alarm goes off, Mandy turns it off immediately. What she doesn't know is that Aiden's artificial heart has already gone crazy, just like mine, while he's stuck in a place that's 12 time zones away.

A serial killer targeted me. My sister-in-law was assaulted and murdered while trying to save me. Not only did I refuse to call the police, I pushed my father-in-law and mother-in-law down a flight of stairs when they came to help. I even helped the killer destroy the evidence. When my husband learned that his entire family got killed, he broke down in tears. He grabbed me by the collar and demanded, "Why? Why would you do this?" I deliberately waved photographs of his family's gruesome deaths in front of him and burst into laughter. "Why?" I sneered. "Because they deserved it." My parents begged me to cooperate so I wouldn't be sentenced to death. Instead, I publicly severed all ties with them. Meanwhile, the murderer who escaped justice struck again, claiming another victim. As public outrage reached its peak, I was selected for the Memory Extraction Program. Before the sentence was carried out, my husband asked me one final time, "The Memory Extraction System is still a prototype. You could die during the procedure. "Tell us the truth now, and there's still a chance to make things right." I slowly raised my head to look at him. "You're not getting a single word out of me." The crowd instantly erupted. People shouted that a worthless life like mine deserved to die. But when my memories were finally extracted, they were the ones crying and begging someone to save me.

Seven years ago, I swap my heart with Orion Gifford, the cyborg replica of me that my sister, Mildred Gifford, creates. However, my heart frequently gives him chest pains because of organ rejection. Mildred blames everything on me. She believes I have hidden a preexisting heart condition and have given away a defective human heart in exchange for a mechanical heart worth millions. So, she sues me for fraud and sends me a court summons. But on the day of the hearing, I don't show up. To force me out of hiding, she publicly announces to the media that she is officially taking Orion as her younger brother and leaving all her assets to him. When I still fail to appear, Mildred loses her patience and goes to the workplace address I leave behind. She steps into a sketchy factory and grabs a random worker to ask, "Do you know Zachary Gifford?" My factory supervisor, Greg Mathews, stares at her in shock and says, "Zachary? He died three years ago from sudden cardiac arrest. It was awful! His body got pulled into one of the machines. There was basically nothing left of him."