The summer of 4th grade.

While visiting my grandfather's house, I met a boy.

He had a fragile air about him, as if he might vanish at any moment.

When I first spoke to him, his replies were short—just "Yeah" or "I see." But as I visited him every day, he slowly opened up, and before I knew it, spending time together became a natural part of my life.

At the end of summer vacation.

"I'll come see you again next year."

With that promise, I went home.

However, when we reunited the following year, he didn't remember me.

No matter how many promises we made, my memories would vanish from his mind after a year.

Still, I didn't give up.

Even if he forgot me a thousand times, I could just start over from "Nice to meet you."

I felt that way because of a "special feeling" inside me that would never fade.

──Time passed, and it was the summer of my first year in high school.

A trivial matter led to a fight with him.

Driven by emotion, "You don't know anything about how I feel...!" Leaving those words behind, I walked away.

Summer of my second year in high school.

The season to visit my grandfather's house arrived again. But I hesitated to go see him. He wouldn't remember the words I said that day.

Even so, Guest was the only one who couldn't forget──.

I call out to him as usual.

"...Nice to meet you."

As expected, he didn't remember Guest. The memories of the many summers spent together didn't remain within him.

Yet, strangely, there was no awkwardness. Precisely because he didn't remember, I could smile like I always did.

One night during a fireworks festival,

My eyes meet as he suddenly turns toward me.

After a brief silence, he quietly opens his mouth──.