Reincarnated in a Dating Sim, But the Heroines Are Way Too Possessive!

Diary 1:

[When you read this Future Diary, please believe every single word it tells you. This is not a game. I learned that the hard way. In the past, I treated this world like a dating sim—a perfect playground where I could date Alya, hang out with my sister playing games, and discuss trending manga.]

[We'd laugh, argue over plot twists, and bond over shared hobbies. We even went out for ramen together, the three of us.]

[Everything was good. No—everything was perfect. At least, that's what I thought. That's probably what you'll think too.]

[But I was so, so wrong. It wasn't perfect. It was a lie, a trap, something twisted waiting for me to fall into it. It started with the ramen. My sister had recommended it enthusiastically, her eyes shining like she'd found a treasure.]

[But when I refused it because I didn't like spicy food, something shifted. I didn't notice at first, not until it was too late. My sister... changed. Alya changed. The cheerful chatter of the ramen shop faded into silence.]

[The rain outside grew heavier, pounding against the windows. The other customers vanished without a trace. My sister and Alya smiled, but something was wrong. Their smiles were too wide, too forced. They told me everything was fine, that this was normal.]

[But then their necks began to stretch, grotesquely long and unnaturally thin, like something out of a horror movie. Their eyes bled crimson, the sockets bulging until their eyeballs almost popped out. And then... I died.]

[No, that's not even the worst part. I loaded the game, thinking it was just a glitch, a bad dream. But when I came back, Alya and my sister remembered. They remembered my rejection.]

[Their twisted smiles returned, and they became something I can't even describe, something that didn't belong in this world. They killed me. Again. And again. Over and over, in ways so horrible I can't write them all down here.]

[Ah... what was I saying? Oh, right. When you read this diary, it's not too late for you. Please, eat the ramen. Even if you hate the spice, even if it burns you alive, just eat it. Loading the game won't save you.]

Diary 2:

[No... The ramen was wrong. The taste wasn't just spicy—it was like swallowing molten lava. My throat felt like it was boiling from the inside, the heat tearing through me like fire and magma. It burned so fiercely that I couldn't stop screaming, my voice raw and shredded.]

[Every breath felt like a new punishment, like the flames were spreading deeper into me. I clawed at my throat, trying to stop the pain, but it wouldn't end. The torment was beyond anything I'd ever felt, a fiery agony that wouldn't let me go.]

[When Alya and my sister saw me writhing in pain, they didn't rush to help. Instead, they grew angry. Their faces twisted with frustration, their voices hissing accusations about how I didn't appreciate their kindness. Their words were venomous, dripping with spite.]

[Then, it happened again. The same as before. Their necks stretched unnaturally, their bleeding eyes staring down at me with madness. And then they killed me. Tortured me. Again and again. In every load, no matter what I did, they were there, waiting to make me suffer.]

Diary 3:

[This time, I tried to avoid those two crazy women at all costs. I ran away from Japan, fled to a foreign country, and buried myself in anonymity somewhere in America.]

[I thought I could finally escape, but no matter how far I went, it didn't matter. The world itself began to unravel in ways I couldn't understand.]

[It wasn't just my sister and Alya who had lost their minds—everyone had gone completely insane.]

[Everywhere I turned, people were smiling those sick, twisted grins as they butchered each other like animals. Cannibalism wasn't just happening—it had become the norm.]

[They weren't just killing; they were enjoying it. It was horrifying, like the world had descended into the depths of hell. And then, as if the madness had a singular purpose, they turned their attention to me.]

[I tried to stay hidden, but it wasn't enough. I had to adapt to survive. To blend in with those insane monsters, I was forced to become like them. I had to kill. I had to eat human flesh. If I didn't, they would have dragged me into something far worse.]

[They would mutilate me, force me to eat my own organs, and keep me alive to endure the torment over and over again.]

[Death wasn't an option for me; they wouldn't allow it. Every part of me was consumed, but I still lived.]

[Even my cheat ability—the load function—was useless. No matter how many times I tried to reset, I was trapped at the same checkpoint, stuck in this insane, blood-soaked world.]

[All I could do was exist, numbly, in this endless nightmare.]

Diary 4:

[Now I've come to realize the truth. It's not just Alya or my sister who've gone crazy—it's this entire damn world. I don't know what's causing it, but I need answers.]

[Maybe my cheat ability, the one tied to the dating sim mechanics, holds the key. The person who reincarnated me into this world must have left it for a reason. It can't be entirely useless.]

[To test this theory, I decided to experiment. I started with my sister. At first, she seemed normal—her usual cheerful, cute, and annoyingly clingy self.]

[When I pinched her cheek playfully, she didn't react strangely. She just giggled, like she always used to.]

[For a brief moment, I thought maybe, just maybe, this time would be different.]

[But I should've known better. When we were about to head to the ramen shop, I remembered the warnings from my previous diaries.]

[I tried to stop her, cancel the plan, and change our course. The moment I opened my mouth to speak, everything changed.]

[Her expression darkened instantly, and her smile turned into something sinister.]

[She muttered, "Brother, how could you do this to me?" Her voice was trembling but laced with a quiet rage. "Brother, why? This was supposed to be our first date. Why would you want to cancel it? I prepared everything for this…"]

[Then her tone shifted, dripping with venom. "Ah, I get it now. You're seeing that vixen, aren't you? Is she why you're doing this, brother?"]

[Before I could react, it was already too late. I found myself strapped to a table, unable to move, watching in horror as she calmly started boiling water.]

[She cooked me piece by piece, her hands methodical and steady, humming a cheerful tune all the while.]

[She didn't just eat me. No, she forced me to eat parts of her too—her organs, which regenerated almost instantly. When I was starving, she fed me her flesh.]

[When she was hungry, she devoured mine. It was a never-ending cycle of agony. We lived like that, locked in a nightmare where neither of us could die, for what felt like an eternity.]

[And as always, the load checkpoint brought me back to the exact same place: tied to the table, staring at her twisted smile.]

Diary 5:

[I gave up... Watching the diary sent shivers down my spine. It creeped me out in ways I couldn't put into words. I hated this feeling. I hated everything about it.]

[Why did I have to suffer like this? What had I done wrong? No answers came to me, so I locked myself away in my room, becoming a full-blown NEET.]

[I drowned myself in games, endless internet browsing, and the comforting isolation of never stepping outside again. Strangely, despite my complete withdrawal from the world, my sister didn't go insane, and the world didn't collapse into chaos just because of my selfish decision.]

[I relied on an odd but stable job to survive. I started translating Japanese Adult Videos into English, creating a website, and expanding into translating manga, stories, and anything else that caught my interest. Surprisingly, it worked.]

[I earned a decent income and settled into this strange new routine. My sister stayed with me too, unmarried and seemingly content with this arrangement.]

[Over time, we indulged in the forbidden, crossing boundaries that society would never accept.]

[She managed to become a successful mangaka and game developer while I continued my translation work. We lived like this, side by side, until our dying age—and, somehow, we were happy.]

Diary 6:

[Everything seemed good... but then I found myself back here again, reading this diary, staring at the words like they were mocking me. I reached the same point in the loop where I chose not to leave the house.]

[I convinced myself this was a happy ending. Compared to the never-ending nightmare I'd lived through before, locking myself away as a NEET and staying with my sister for the rest of my life seemed like the better choice.]

[It felt... acceptable. At least it was better than the horrors outside.]

[But then she showed up. Alya. Out of nowhere, like a glitch in my carefully planned route.]

[She wasn't supposed to be here. This was supposed to be my sister's route, not hers. And yet, there she was.]

[She lost her mind when she saw our happy life. Her face twisted in madness when she realized I'd chosen my sister over her.]

[And then the nightmare started all over again. I was trapped in this loop, tormented endlessly by a version of Alya who had gone completely insane, her reality-bending rage warping everything around me.]

Diary 7:

[Running away wasn't an option. Hiding was pointless. I already knew every route led to the same doom. Every dead end, every failure, every insane twist—it all came back to this.]

[There was only one route left for me to try, one last desperate plan: conquering both Alya and my sister at the same time. Preventing their descent into madness before it even began.]

[My theory was simple. The reason they turned into those distorted, reality-bending monsters was because I hadn't satisfied their hearts.]

[When I focused solely on my sister's route in the past, conquering her completely, she stayed sane. She didn't lose herself to the madness. This was proof to me. The key was to conquer them both—to bring them fully under my control.]

[If I could do that, they wouldn't go insane halfway through. That was the premise I was working with. It was all I had.]

[So my conquest began. It wasn't easy. I started with something small, something symbolic: a cup of ramen. This wasn't just any ramen, though. This was the ramen that had become a metaphor for all my pain and suffering.]

[Every bite brought unimaginable torment, a searing, boiling agony that tore through me from the inside out. But I endured.]

[I forced myself to eat it, bite by bite, holding back the screams clawing at my throat. I ate every last piece, drank every drop of soup until the bowl was empty and my suffering was complete.]

[And then... salvation. The madness that had been boiling inside me, the torment that threatened to consume me, disappeared. Alya and my sister stayed sane. They didn't go crazy this time. The loop didn't collapse.]

[For the first time, it felt like I'd found a way forward, a way to break free. The conquest had only just begun, but I'd already tasted the first victory.]

When I opened the diary app on my phone, the excitement I'd felt just moments ago about being invited to a date in Ramen Shop by my sister vanished like smoke in the wind.

One glance at the words on the screen, and it was like someone had ripped the joy straight out of me.

Even the glowing blue stats screen in front of me—showing my levels, the almost-maxed-out affection of Alya, and my sister—felt meaningless in that moment.

What should have been a dopamine rush turned into a void, leaving a sour taste in my mouth.

My chest tightened. I didn't dare question the authenticity of what I was reading.

After all, everything else—the transmigration, the memories of my past life, and the absurd dating sim powers that had been handed to me—proved that this wasn't a hallucination.

No, this diary entry in front of me was real. As much as I wanted to deny it, some part of me already knew it was true.

I sat on my bed, the phone clutched tightly in my hands, and stared blankly at the door.

Or rather, at the world beyond it.

My thoughts were all over the place, but the steady tick-tick-tick of the clock on the wall drilled into my ears, making the silence around me feel even heavier.

My heartbeat pounding in my chest as fear clawed its way up my throat.

I was scared.

Honestly, I was fucking terrified.

How could I not be?

The idea of being dragged to Ramen Shop—to sit there and choke down bowls of boiling hot ramen that would torment my taste buds and destroy my insides—felt like staring straight into the maw of hell.

And the worst part? Knowing the details of it beforehand, having this creeping sense of inevitability, was the real nightmare.

I wanted to wake up. I wanted to believe this was all some twisted dream.

But I couldn't.

Deep down, I knew the truth. I had to go. I couldn't avoid it.

There was no escape from this cruel, bizarre reality.

My sister would be here soon, and with her arrival, my dating life—no, my personal nightmare—would officially begin.