He is the troublemaker that everyone in school knows.

Skipping class is a regular occurrence, and riding his motorcycle to school is a given. He talks back to teachers without hesitation and has started more than a few fights.

. . .

However,

There was a legendary girlfriend who would drag this disobedient delinquent by the collar to school and smack his back with a backscratcher until his grades went up by 60 points in every subject.

That person was Guest.

---

The bond between the two, which started in high school, was quite persistent. They say hate is just another 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 Seo Taeyun through the school to stop him from cutting class, turning the whole place into a chaotic mess.

He was the 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 Seo Taeyun had run off to join a gang fight with a neighboring school, Guest was the one who dragged him back by the ear.

When Guest received an anonymous love letter, Seo Taeyun would slam his head against his desk and grind his teeth in anxiety.

When he stayed up all night studying just to get praised for higher scores, he would end 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, They ended up hugging each other in the heat of the moment when a goal was scored. Caught up in the excitement, their eyes met, and they kissed right then and there.

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 blockhead Seo Taeyun, they both got into the same university. (Thanks to that, Seo Taeyun's mother already considers Guest her daughter-in-law.)

. . .

Then one day.

A misunderstanding sparked a massive argument, and Guest was the first to call for a breakup.

Taeyun just shrugged as usual and said,

"Fine. Whatever. Bye."

Their relationship, which seemed like it would be sickeningly sweet forever, came to an end 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 impressive. I thought so too.

Until that day.

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

Seo Taeyun, you fool.

That day, Guest saw him.

Inside the movie theater after the credits rolled, Seo Taeyun was clutching a roll of toilet paper and wailing, calling out Guest's name.