what is s1 and s2 heart sounds

One piece of candy handed to them by a beggar changes everything — in that moment, two friends, Luna (female) and Hanbyeol (male), suddenly switch souls and find themselves falling in love with the same person at the same time. The once-perfect relationship between Luna, Hanbyeol, and Woojoo begins to crack as their emotions collide and drift apart. Is it a cruel joke from God, or a divine gift? Does love follow the body, or the heart? As long-hidden truths and desires come to light, their relationships become increasingly twisted. Only by living someone else’s life do they finally discover who they truly are — and what true love really means.

For five years, Luna Stone pretends to be deaf and mute, not for herself, but to help Sean Porter survive his darkest years. Quietly, she also funnels her parents' entire inheritance into keeping his studio afloat. She asks for nothing. She says nothing. Then Sean recovers his hearing, his studio becomes a company, and life turns good again. In an unguarded moment,he says out loud what he actually feels: he never wanted to marry her. His heart still belongs to someone else. Luna hears every word. She walks away without making a scene, and into a waiting arrangement with Kilan Arden, the man she was always supposed to find.

For five years, Luna Stone pretends to be deaf and mute, not for herself, but to help Sean Porter survive his darkest years. Quietly, she also funnels her parents' entire inheritance into keeping his studio afloat. She asks for nothing. She says nothing. Then Sean recovers his hearing, his studio becomes a company, and life turns good again. In an unguarded moment,he says out loud what he actually feels: he never wanted to marry her. His heart still belongs to someone else. Luna hears every word. She walks away without making a scene, and into a waiting arrangement with Kilan Arden, the man she was always supposed to find.

Five years ago Melissa Gill and Lewis Sharp share one night together and she vanishes before dawn without a word. Five years later he engineers her return, traps her into signing a three year marriage contract, and makes absolutely clear he has no intention of letting her disappear again. By day he runs cold and sharp, pulling her close enough to make her heart stutter then pushing back just enough to keep her off balance. She carries secrets and guilt she hasn’t found a way to say out loud, and she lets him circle her without quite letting him in. Neither of them calls it love. Both of them know exactly what it is.

"Selene, your bloodline is too lowly. You don't deserve to be a Luna! You must let your Alpha mark his sister-in-law!" My mother-in-law despises me because I'm a lowly Omega. When my mate's brother dies in an accident, my mother-in-law wants me to allow my mate, Eugene Latham, to have pups with his sister-in-law, Kristy Unwin, because of her superior bloodline. Otherwise, Eugene will lose his right to become Alpha! Eugene wraps his arms around me tenderly and says, "You're the only one in my heart, but you need to understand that the pack can't go without an Alpha. I'll announce to everyone that you're my Luna once Kristy's pregnant and I become Alpha, okay?" I love him deeply, so I believe him. However, when Eugene goes from sleeping with Kristy once a month to sleeping with me once a month, I realize he's no longer a mate who belonged to me alone. When Kristy announces that she's pregnant and that she and Eugene are going to get married, I'm the only one who's kept in the dark. My heart shatters into pieces when I see the glimmering Luna's ring on her finger. If this is what Eugene wants, I'll fake my death and leave him. I won't ever return.

Rachel Sheldon's world was turned upside down when she was drugged and woke up in the bed of Barrett York — the most powerful man in the city. When she discovered she was pregnant, Rachel disappeared from the spotlight, determined to raise the child in secrecy. But on the very day she gave birth, Barrett found her. Fiercely independent, Rachel was unlike any woman Barrett had ever met — and he couldn't stay away. As he launched a relentless pursuit, Rachel's hidden identities were revealed one after another, each more surprising than the last. Drawn to her strength, Barrett began to fall — and so did Rachel. Slowly, she opened her heart to the man she had once tried to escape. What had begun as an accident just might have become forever.

I have a secret: I can see live comments! After scrolling past a video of a muscular man, my husband kicks me out of the car on the highway. The comments say "He's jealous! He totally loves you!" and "He just has that cold CEO syndrome". But when I'm badly injured in an accident, he allows his first love to spill hot soup at me,push me down the stairs, destroy my belongings,and be intimate with him countless times, and the comments are still celebrating. "Aloof now, chase later!" What they don't know is that from the first moment my heart turned cold, I've been calmly planning my escape. I hand him divorce papers and disappear completely, then remarry someone far above his station. No matter how he weeps in regret, I never look back.

Ian Brown marries Yvonne Miller out of gratitude to her family, and has spent years quietly making her comfortable, growing Miller Group into something genuinely powerful while asking little in return. Yvonne sees only a spineless live-in husband; her heart has always belonged to Sean Jones, the man she truly wants. When Ian's parents ask to meet her over the New Year holiday, she turns them away without hesitation. Then the call comes. Yvonne's own parents are in a car accident and urgently need a blood transfusion. Ian finds her immediately. Yvonne, convinced he's fabricating a crisis to manipulate her, doesn't just refuse, she actively tries to stop him from helping. By the time the truth surfaces, the damage is already done, and the weight of what she threw away settles over her all at once.

I have a secret: I can see live comments! After scrolling past a video of a muscular man, my husband kicks me out of the car on the highway. The comments say "He's jealous! He totally loves you!" and "He just has that cold CEO syndrome". But when I'm badly injured in an accident, he allows his first love to spill hot soup at me,push me down the stairs, destroy my belongings,and be intimate with him countless times, and the comments are still celebrating. "Aloof now, chase later!" What they don't know is that from the first moment my heart turned cold, I've been calmly planning my escape. I hand him divorce papers and disappear completely, then remarry someone far above his station. No matter how he weeps in regret, I never look back.

Jodie Walsh finds herself transmigrated into a romance novel as the ex-wife who got screwed over. The original character spent five years in an arranged marriage with a CEO tyrant, giving him everything—money, property, her whole heart—only to end up with her family destroyed and herself behind bars. And it gets worse. Her parents, best friend, childhood friends, and basically everyone connected to her was just cannon fodder in the story. Well, time for Jodie to roll up her sleeves and rewrite this mess. Mr. Hotshot CEO? She's going to see how mighty he is after bankruptcy. The pure, innocent female lead? Honey, let's add some darkness to that light. Her parents jumping to their deaths? Not in her version. They'll be doing the disco on her ex-mother-in-law's grave instead. Her bestie killed by her abusive husband? Hmm... such a "wonderful" husband. Let's save him for the female lead's bestie. Her broke aristocratic childhood friends? Here, one business opportunity each, and boom, instant CEOs, easy peasy. And the supposed villain? With that face and those abs? No one's going to object to him being the male protagonist. What's that? You're asking what makes her so badass? Jodie beckons to the mafia boss. "Babe, you tell them." "Simple." Mafia boss grins. "She's the boss lady."

To repay a single act of kindness, he spent ten years as an invisible husband, pouring his heart and strength into her success. When betrayal and humiliation drove him to the brink, he chose to "die," severing every tie to the past.Years later, he returned as a powerful figure standing high above the world. The debt of gratitude repaid and the old wounds cut clean, he faced his kneeling, repentant ex-wife with a heart already healed. Having found his own happiness, he rose from the ashes—reborn, untouchable, and no longer bound by the love that once defined him.

Willa Grant, a wealthy heiress, is hit by a car three days before her wedding and left paralyzed for life. What she never expects is that her fiance, Ethan Shaw, has betrayed her again and again. To make his illegitimate daughter Yara acceptable to Willa, Ethan deliberately delays Willa's surgery and secretly has her uterus removed. Heartbroken, Willa wakes to the truth. She pretends not to know anything, and while Ethan lets his guard down, she secretly contacts her best friend Sophie and leaves the country for surgery. Afterward, Willa personally witnesses Ethan meeting Jenna at the orphanage, Jenna coming to the Shaw residence to provoke her, Jenna framing her with a staged fall, and Ethan and his family insulting her without mercy. With her heart completely dead, Willa fakes her death in a plane crash and disappears overseas. When Ethan hears the news at the wedding, he breaks down. When they meet again, Ethan can only hide outside her hospital room and watch her rehabilitation from a distance. Crushed by guilt, he decides to let Willa live the rest of her life without him.

Dumped by her ex, Lena falls into bed with her irresistible CEO—but vanishes by morning. As the CEO searches for the mystery woman who stole his heart, Lena’s scheming ex-mother-in-law steals her identity… and takes her place as the CEO’s wife.

The doctor said I only had three days left to live. Acute liver failure. My only hope was an experimental clinical trial. It was extremely risky, but had the faintest sliver of a chance to survive. But my husband, David, gave the last available spot... to my adopted sister, Emma, also my daughter’s godmother. Her condition was still in its early stages. He said it was the "right decision," because she “deserved to live more.” I signed the papers to forgo treatment and took the high-dose painkillers prescribed by the doctor. The cost? My organs would shut down, and I would die. When I handed over the jewelry company I’d poured my heart into, along with all my designs, to Emma, my parents praised me, saying, “Now that’s what a good big sister should do.” When I agreed to divorce David so he could marry Emma, he said, “You’ve finally learned to be understanding.” When I told my daughter to call Emma ‘Mom,’ she clapped her hands and said, “Emma is such a gentle and kind mother!” When I gave all my assets to Emma, everyone in the family thought it was only natural. No one noticed anything was wrong with me. I’m just curious. Will they still be able to smile when they find out I'm dead?

Before a chaotic and mesmerizing party night, Madeline never imagined she would truly end up with Jeremy. After their unexpected marriage, however, they drift further apart. In her most desperate moments, Madeline discovers that she has already captured Jeremy's heart without realizing it.

Erin Sanders finds herself entangled in a risky romance with her billionaire arch-rival, Nolan Duffy, who covertly becomes her house boy. But when his deceptions are exposed, threatening her heart and her company, Erin must choose between safeguarding her family legacy or embracing their unconventional love..

The discomfort in his heart only grew more intense when he saw someone being embraced inside the private room. Finding an excuse, he left the room and forcefully pulled the woman at the end of the corridor into his arms to fiercely kiss her. At this point, the only thing that occupied his mind was how to make her his.

Sold by her boyfriend to the mafia king Vincenzo as his contract bride, Violet plans her escape. Yet she discovers Vincenzo's heart of gold... that belongs to her. When danger strikes, Vincenzo saves Violet and suffers grave injuries, leading her to marry him out of duty and gratitude. But during their wedding ceremony, an assassination plot unfolds…