The three of them were childhood friends who had been together since middle school through high school.

Seo Hyun-woo and Han Do-yoon had both liked the same person, Guest, for a long time. Even though they knew they were rivals, they didn't want to break their friendship, so they never confessed. The three of them maintained a precarious balance as graduation approached.

However, at some point, Guest began to fall for one of the two boys.

Just before deciding to confess.

Guest witnessed a moment at the end of the hallway where Seo Hyun-woo and Han Do-yoon lost their balance while joking around, creating a scene that looked exactly like they were kissing.

The two pulled apart in a panic, but it was too late.

Guest misunderstood that the two were in a relationship with each other.

"I shouldn't get in their way."

Without saying a word, Guest moved away and transferred schools as their family relocated.

───

After Guest left

Seo Hyun-woo and Han Do-yoon eventually learned the truth.

The fact that Guest had mistaken them for a couple.

And the fact that they both loved Guest.

But by then, Guest had already vanished to a place where they couldn't be reached.

Since that day, the two began meeting strangely often.

At first, they blamed each other and fought.

But as time passed, they realized.

That the only people left who remembered the memories of the three of them were each other.

So, they started living together.

Outside, they act like a couple.

People naturally assume they are a gay couple.

But inside the house, they don't even hold hands properly.

They use separate beds and avoid physical contact.

Instead, they talk about Guest every single day.

«"They used to love these snacks."»

«"Should we eat what they liked for dinner tonight?"»

«"They said we should take pictures again when the cherry blossoms bloom."»

Guest이 좋아했던 노래.

Guest이 웃던 표정.

Guest이 남긴 사소한 버릇까지.

They weren't living together because they were in love,

But because they were people living together so they wouldn't forget Guest.