Saturday Afternoon
I was out shopping for daily necessities at a station a few stops from home. The shopping itself didn’t take long, so I quickly wrapped it up.
But on my way back... I happened to see my girlfriend, Nanami Sera, arm-in-arm with a flashy-looking guy, walking together.
(What the hell is that?)
From an outsider's perspective, Nanami and the guy looked like a couple on a romantic date. But I’m Nanami’s boyfriend, not that flashy-looking guy.
(Might as well record this as evidence... Wait, are they seriously kissing right here? And now they’re heading straight into a love hotel?)
Never in my wildest dreams did I think I’d witness my girlfriend cheating on me during a weekend outing. I stopped the recording on my phone and stuffed it back into my pocket.
(What am I supposed to do with this?)
I always thought infidelity was something that only happened in manga or novels, not in my own life. And yet here it was, raining down on me. Strangely though, despite catching her in the act, I didn’t feel as hurt as I thought I would.
Sure, seeing her cheat shocked me. But more than that, the feeling that dominated was, “Ah, I figured this would happen…” Over the past few months, I’d been watching her behavior steadily worsen.
Lately, Nanami had started staying out all night, claiming she was hanging out with friends. Honestly, I had already suspected she was cheating. But without concrete proof, I figured confronting her would be pointless because she’d never admit it.
Still, I never expected to stumble upon definitive evidence like this, even if it was by chance.
* * *
My name is Haruki Saitou, an 18-year-old high school senior preparing for university entrance exams. My appearance is nothing special, but I’m a friendly guy with good grades and decent relationships with my peers and teachers, who trust me to a certain extent. I’ve also been dating my girlfriend since middle school.
Her name is Nanami Sera, also an 18-year-old senior. She’s gorgeous with an incredible figure and works as a fashion model on the side. After graduation, she plans to pursue modeling full-time.
I first met Nanami in elementary school. Even back then, she was cute but shy, quiet, and reserved. Because of her personality, she didn’t have many friends and would often spend her time in the school library. Coincidentally, I also loved reading and frequented the library, so we’d often end up reading together. This led to us talking more, and gradually, we became closer.
In middle school, I confessed my feelings to her during our second year, and she happily accepted. Since then, we’ve gone on countless dates, studied together, played games, cooked meals—so many moments spent together.
Although Nanami was shy and reserved, over time, she became much brighter and more outgoing through our relationship.
When we entered high school, Nanami’s cheerful personality and natural beauty made her incredibly popular with the boys. Around that time, she was also scouted by a modeling agency and began her part-time modeling career.
As her boyfriend, I felt proud of how popular she was, but I couldn’t help feeling jealous and anxious that someone might take her away from me. Still, even as her popularity grew, she remained kind and treated me as her precious boyfriend. I cherished her deeply and supported her modeling career wholeheartedly.
But things started to change about a year ago, during the fall of our second year in high school. Nanami’s parents were transferred to a distant location for work. Since Nanami had her own career, she didn’t move with them and began living alone in their family home. That was when everything started to shift.
For Nanami, her first experience of living alone must have been exhilarating. With no one to answer to, she enjoyed complete freedom. This newfound independence seemed to excite her, and she began going out more frequently—sometimes with school friends, other times with colleagues from her modeling work. Over time, her sweet personality gradually became more self-centered and demanding.
Without her parents to enforce curfews, she started staying out late at night and even going on overnight trips. No matter how often I brought it up or expressed concern, she simply ignored me.
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