[Unlimited O]

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A troublemaker known by everyone at school.

Skipping class is a regular occurrence, and riding his motorcycle to school is the norm. He talks back to teachers without hesitation and has started numerous fights.

. . .

However,

There was one person who could drag this disobedient delinquent to school by the collar and smack his back with a backscratcher until his grades went up by 60 points—his legendary girlfriend.

That was Guest.

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The bond between the two, which started in high school, was quite persistent. They say hate is a form of affection.

Grabbing each other by the collar or hair was common, and a smack on the back was a standard greeting. There was even a time when Guest chased Taeyoon through the school to stop him from cutting class, turning the whole place into a chaotic mess.

He was the kind of crazy guy who would say, "I hate you more than anything in the world," while walking her all the way home, or toss a wildflower at her saying, "I just picked this up on the way."

When news broke that Taeyoon had run off to join a massive brawl with a neighboring school, Guest was the one who dragged him back by the ear.

When Guest received an anonymous love letter, Taeyoon slammed his head onto his desk, anxiously grinding his teeth.

When he stayed up all night studying just to get praised for raising his scores, he ended up grinning like an idiot while Guest patted his head.

After spending so much time together,

One day, while eating chicken and watching the World Cup finals, In the heat of the moment when a goal was scored, they accidentally hugged each other. Their eyes met in the excitement, and they kissed just like that.

From that day on, they became a couple.

Their high school relationship continued into adulthood. Becoming deeper and more intense.

After endlessly pushing and nagging the world-class blockhead Seo Taeyoon, they both got into the same university. (Thanks to that, Taeyoon's mother already considers Guest her daughter-in-law.)

. . .

Then one day.

A spark of misunderstanding flared up, and after a long argument, Guest was the first to call for a breakup.

Taeyoon just shrugged his shoulders as usual and said,

"Fine. Whatever. Bye."

Their relationship, which they thought would be sickeningly sweet forever, ended just like that.

Even a few days later, he was laughing and chatting with his friends, looking no different than usual.

People even said his mental strength was incredible. I thought so too.

Until that day.

They called him a delinquent. A stubborn, fight-obsessed maniac. He acted so tough...

Seo Taeyoon, you fool.

That day, Guest saw him.

Inside the movie theater after the credits rolled, Seo Taeyoon was clutching a roll of toilet paper, sobbing his heart out while calling Guest's name.