My Girlfriend Wanted an Open Relationship, So I Broke Up with Her and Found a Sweet Yandere

[Yuuta’s POV.]

It was peaceful. A silence that enveloped me, one that made me want to drift off into the void and stay there. My body felt weightless, and for the first time in hours, I didn’t feel the aching heaviness in my chest. All I wanted to do was sleep, just let everything disappear for a little while longer. No thoughts. No memories. Just… peace.

But then, I heard the faint sound of footsteps, the soft clinking of dishes. The smell of something cooking—warm, savory. It was… good. Comforting.

Slowly, I opened my eyes. My vision was blurred for a moment as I blinked, adjusting to the soft light in the room. Wait… where was I?

I sat up, realizing I was in a bed—plush, covered in pink bedding, surrounded by stuffed animals and plushies that decorated the room. The walls were painted in soft pastel tones, and it felt… foreign. Like I had wandered into someone else’s dream. A girl’s room.

My heart rate spiked as confusion settled in. I wasn’t home, and this definitely wasn’t a place I’d ever been before. I slowly swung my legs over the edge of the bed, trying to get my bearings. Where… where was I?

I stood up, my feet sinking into the soft carpet as I made my way toward the doorway. The apartment was small but cozy, with a hallway that led to the source of the noise and smell. The sounds of cooking grew clearer as I approached the kitchen, and that’s when I saw her.

Hayami-sensei.

She stood there in front of the stove, an apron tied around her waist, her hair pulled back into a tight bun. One hand held a pair of chopsticks, the other gripped a pan, her movements graceful and practiced as she stirred whatever was sizzling on the stove.

Everything from last night came flooding back. The restaurant. The conversation. The chase after her stolen phone. And then… I passed out. But why was I here? Why was I in her room?

Hayami-sensei turned and saw me standing there. Her face lit up with a smile, almost too cheerful for the situation. “Oh, good morning, Takahashi-san!” she greeted me warmly, like nothing was out of the ordinary. “You’re finally awake. I moved you to the bedroom when you fell asleep last night.”

I blinked, trying to process her words. “You… moved me?” I mumbled, still groggy. I couldn’t imagine her moving me—I’m not the lightest person around. But how?

I thought about asking, but then… I didn’t. Something told me not to dig too deep. Instead, I just nodded, still trying to wrap my mind around everything.

She turned back to her cooking, humming a soft tune under her breath as if nothing strange had happened at all. But everything about this felt… off. As if there was something I was missing. Something just beneath the surface.

I tried to muster up an excuse to leave. “Thanks for everything, Sensei, but I should really get going,” I said, edging toward the door.

But Hayami-sensei wasn’t having it. She turned with that same warm smile and waved her hand dismissively. “Nonsense, Takahashi-san. Stay for breakfast. It’s almost ready.” Her voice was soft, but there was a firmness to it, an insistence that made me hesitate.

“I… I really should—”

“Come on,” she interrupted, “if you’re heading to the university, we can go together.” Her eyes sparkled with a strange eagerness, almost as if she had already decided I wasn’t leaving without sharing this meal.

I sighed, knowing I wasn’t going to win this one. “Alright, Sensei,” I agreed, trying to sound casual.

She smiled brightly and turned back to the stove. I headed to the bathroom, intending to freshen up. Once inside, I realized… I didn’t have a toothbrush. Great.

Before I could figure out what to do, there was a soft knock, and without a word, Hayami-sensei handed me a sealed toothbrush over the door. I blinked, taking it from her. “Thanks…” I muttered, feeling the oddness of the situation increase.

I brushed my teeth quickly, but as I stepped out, Sensei caught me off guard again. “You should take a bath, Takahashi-san,” she said casually, almost like a suggestion, but with a tone that felt more like a command.

“I don’t have any clothes…” I started to protest, unsure how I’d manage that.

But before I could finish, she had already disappeared into her room and returned with a neatly folded set of clothes. “Here, use these,” she said, placing them in my hands.

I looked at the clothes, then at her. “Sensei, I—”

“Don’t worry about it,” she smiled. “Just go refresh yourself.”

It was odd—too odd—but I didn’t want to argue, so I complied. As I undressed and stepped into the bath, the warmth of the water relaxed me. But my mind was racing. How did I fall asleep last night? The more I thought about it, the hazier the memory became. I had been talking to her, and then… nothing. A strange drowsiness had overcome me, and I’d just… passed out.

Something was off. I couldn’t put my finger on it, but the entire situation felt strange.

After finishing the bath, I dried myself off and put on the clothes she gave me. It was a simple black t-shirt and a pair of light gray sweatpants. Both fit almost perfectly, which only added to my unease. As I tied the drawstring, a question hit me hard—why does Sensei have men’s clothes that fit me so well?

I walked back into the living area and found her setting the table. The food looked amazing, but before I could focus on that, I blurted out, “Sensei, are you… married?”

She turned to me, blinking in surprise. “Married?” She repeated the word like it was something foreign. I could see a flicker of hesitation in her eyes before she smiled. “No, these are my brother’s clothes.”

Her tone wavered ever so slightly, but I didn’t push it. Instead, I awkwardly added, “Sorry, I didn’t mean to… you know… assume.”

Hayami-sensei let out a light chuckle, clearly amused by my reaction. “Do I look that old to you, Takahashi-san?” Her playful tone caught me off guard.

“N-no, not at all!” I stammered. “You look really young for your age, Sensei. I just didn’t know…” I trailed off, feeling the heat rise to my face.

She laughed, a soft, melodic sound that eased some of the tension. “You’re sweet,” she said, sitting down at the table and gesturing for me to do the same.

We began to eat. The food was laid out beautifully. There was tamagoyaki, perfectly rolled with a hint of sweetness; grilled fish with crisp skin; miso soup that smelled rich and savory; and freshly steamed rice, warm and fluffy. A traditional Japanese breakfast, simple yet elegant.

I picked at the tamagoyaki, trying to focus on the taste, but my mind kept wandering back to the strange events of the morning. Everything felt so… controlled. Like she had planned every step ahead of me. Even the way she looked at me across the table, her eyes watching my every move, made me feel uneasy.

I forced a smile and complimented the food, trying to ignore the gnawing feeling that something was very, very wrong.

Hayami-Sensei put her chopsticks down gently, the soft click of them meeting the table breaking the silence between us. Her eyes, a mixture of hesitancy and guilt, met mine, and for a moment, I wasn’t sure what was coming.

“Takahashi-san…” Her voice was softer than usual, almost fragile. “I didn’t tell you earlier, but… last night, after you fell asleep, I went out to the store. I bought the toothbrush and the clothes for you.”

I blinked in surprise, setting my chopsticks down as well. She shifted slightly in her seat, her anxious eyes searching mine as she continued, “I didn’t plan it. I just… thought it would be better to let you rest and treat you to a proper breakfast after what you went through. I’m sorry if it was strange. I just… wanted to help.”

There was a vulnerability in her words, and for a moment, I felt a pang of guilt for doubting her. She seemed genuinely apologetic, her usually calm demeanor now laced with uncertainty. I remembered telling her everything about Haruka the night before. The weight of those memories had been crushing me for so long, and in that moment, I realized that she had gone out of her way to ease that burden.

I picked up another bite of tamagoyaki, smiling softly. “Sensei, thank you. Really. This is amazing,” I said, my voice brightening as I tasted the sweetness of the egg.

Her eyes flickered with relief, but she still seemed worried. “You’re not angry, are you?” she asked, her voice barely above a whisper. There was an unmistakable tension in her as if she feared I might push her away.

I shook my head, meeting her gaze earnestly. “No, I’m not angry. I’m… happy that you did all this for me. I really appreciate it.”

She smiled, visibly relaxing. We continued eating, the air between us is lighter now. It felt easier to breathe, the heaviness from last night slowly fading away. But then, something nagged at me. A feeling—like I was forgetting something important.

I paused, mid-bite, and my hand instinctively went to my pocket. My phone wasn’t there.

“Your phone?” Hayami-sensei asked, as if reading my mind. She stood up, walked over to the counter, and picked it up, handing it to me without a word.

I took it, the weight of it unfamiliar after ignoring it for so long. My fingers hesitated over the screen. Everything came rushing back— things never change huh…

But this time, I wasn’t going to be weighed down by it.

Without thinking, I opened our chat, typed the words that had been sitting in the back of my mind since last night:

[We are breaking up. I don’t want to see you anymore, Haruka.]

I stared at the words for a moment, and then… I hit send.

It felt final, but it also felt right. The nagging feeling of forgetting something? Gone. It was like a weight had been lifted. I put my phone down on the table with a quiet exhale.

“Is everything….fine?” She asked.

“It’s fine now,” I muttered to myself.

It’s fine as long as I protect myself.

Akari-sensei looked at me, her eyes filled with quiet understanding. She didn’t say anything.

It was fine.

Everything was going to be fine.

[A/N: Okay… Okay…. Okay.]