Who Is The Protagonist In 'Diary Of An Oxygen Thief'?

My adopted younger sister, Marissa Payton, loves pulling pranks on others. But I'm the only one who gets hurt in her pranks. Last year, she and our older brother, James Payton, locked me up in a cold storage room. Because of that, I'm afflicted with a case of severe asthma. James apologizes to me before telling me that he'll take me cave diving just to make it up to me. Marissa tags along with us on the trip. She keeps casting me malicious glances every now and then. Feeling rather uneasy, I quickly get into the water just so I can get away from Marissa. But when I'm 65 feet deep, I feel a wave of suffocation hitting me all of a sudden. It turns out that Marissa has secretly shut off the oxygen supply. I can hear Marissa's smug laughter ringing out from the underwater communicator. "Look, Jamie! I told you that Nat would fall for it again!" James' voice is filled with affection. "Leave it to you to be smart enough to think of such a prank to play on your sister, you little imp." My face has gone blue from the suffocation. I struggle with all my might in an attempt to turn on the bailout cylinder, only to feel my hands getting slapped away from them thanks to Marissa, who has swum over to me. She then whines into the communicator, "Look at how dramatic Nat is being, Jamie! She can't stand the suffocation at all even though it's only been a few seconds!" I hear James' icy and aloof voice reverberating in my earpiece. "Just hold on a little longer. Look at how delicate you are! It hasn't been all that long, yet you already can't stand it. How humiliating. You're not even in the same league as Mari!" This time, I can only stare at James in despair as my complexion slowly goes purple. Has he forgotten what happened to me? Thanks to their prank, my lungs have already sustained irreversible damage. It's getting more and more difficult for me to breathe. Finally, my vision goes black, and I collapse in the dark bottom of the sea. This prank isn't funny at all, James. This time, I'm going to die for real.

Adrian Moretti’s adopted sister—She knew perfectly well that I suffered from severe asthma and could not be exposed to smoke or strong scents. Yet during the yacht reception, she deliberately dragged me onto the open deck, where cigars burned nonstop and the wind howled. Within seconds, my chest tightened. When I reached for my inhaler, my blood ran cold. It was empty. I collapsed against the railing, gasping violently, my lungs burning as if they were collapsing in on themselves. She crouched beside me and smiled. “You’re always so dramatic. It’s just a little smoke. You don’t need to act like you’re dying,” she said softly. “You’re too weak. You need to build some tolerance.” I looked toward Adrian, my vision already blurring. “Adrian,” I choked. “Give me my inhaler. If I don’t use it right now, I’m going to suffocate.” He frowned slightly. “Don’t you think you’re overreacting?” he said coldly. “I’ve never heard of anyone dying from a bit of smoke. She’s right—you’re always seeking attention. We finally gathered tonight, and you’re ruining it.” My heart dropped. I fumbled for my phone and called my mother. “Mom,” I sobbed, barely able to breathe. “I’m being bullied… and I can’t breathe.” My voice shook violently.

My stepsister falsely accuses me of causing her allergies to act up. My three brothers stuff me into the cramped cellar and chain the door shut. I pound on the door and beg them to let me out. My eldest brother, an outstanding businessman, snaps, "It's bad enough that you keep bullying Lori. How could you make her eat seafood when you know she's allergic to it? Isn't that just murder? Stay in there and reflect on your mistakes!" My second brother, an award-winning singer, and my third brother, a genius painter, scoff contemptuously. "It's unbelievable that someone as evil as you is making excuses to garner pity. You can stay in there and repent for your sins!" After that, they take our shuddering stepsister to the hospital. The oxygen in the cellar soon runs out, and it gets difficult to breathe. Ultimately, I die in there. My brothers only remember me three days later when they bring our stepsister back from the hospital. Unbeknownst to them, I've already died of asphyxiation.

Introduction：Xienne Collins, a typical college student, is beautiful and smart. Known for being kind but being abused by her classmates whom she considered friends. Her character was trampled on. Not a day goes by that she is not begrudged and bullied by them. She endured it for too long and told herself she would not retaliate or will take vengeance. But the day came when she was filled with what her classmates were doing. She wanted to kill them all and planned carefully how she could accomplish this. She killed her classmates one by one. She writes in her diary what she did to her classmates for satisfaction about what she had done to them. Little did she know someone is watching her.

I become a firefighter after getting abandoned by my ex-wife, who's a domestic abuser. At first, I think my fiancee, the heroic Captain Cassadee Flack, will be my salvation. But at the blazing scene, the warehouse explodes for the second time due to the scorching temperature. What makes things worse is that the oxygen in my tank will deplete soon. I reach out to Cassadee for help, only to witness her passing the last spare oxygen tank to Colin Halfpenny, the teammate standing next to her. "This is Colin's first time entering a blazing scene. He's terrified, whereas you have enough experience under your belt to deal with this situation. You should hang on for a while longer." I'm choking on so much thick smoke to the point that I almost suffocate from it. Angered, I point at the blinking red light on the control panel. "If I keep suffering from the lack of oxygen, my brain will eventually die! This is the standard procedure of a rescue mission!" Cassadee wears an impatient look. "Why are you being this petty? I promised Colin's dad, who sacrificed himself for me, that I'd take good care of Colin! Can't you be more empathetic? "I thought you could endure pain the best! Back then, you didn't even let out a groan when your ex-wife broke your rib! How is it possible that you can't endure such a small difficulty in this mission? "I finally understand what kind of person you actually are! Someone who's grown up in nothing but pain and misery is bound to be selfish!" I no longer utter a single word to Cassadee. Instead, I use all of my strength to press the emergency SOS button on my helmet. "Command center, please send help immediately. The on-site commander has demonstrated severe misjudgment in handling the situation. I request compulsory intervention."

A lethal neurotoxin had taken hold of my lungs. My time is running out. My mother, Sofia, was the most connected lawyer in Palermo, excelling in burying crimes and twisting the law. When my brother Vincent mowed me down and shattered my leg, she called in every favor to clear his record. My father, Tommaso, the most feared private doctor in Sicily, faked my medical files, branding me unstable and delusional, all to mold me into the obedient son they needed. Then there was Lina, only daughter of Don Vitali, my wife. She said, “We let him out for Vincent’s liver. What if he says no?” Dad’s voice went cold. “He has two choices: lie quietly on that operating table… or waste away in the sanatorium for what’s left of his life.” I pushed the parlor door open, steady and slow. My voice was flat. “I’ll do it.” Every one of them let out a breath they’d been holding, showering me with hollow words. They didn’t know there was no life left to threaten. I had twenty-four hours. By sunrise, I would be dead either way. Funny… now that I’m in the ground, why are they all crying?