Sing a signal with Yubisaki (SUNO)

Class 2-C, Kyōiku Middle School.
As the afternoon light slid across the blackboard,
Aoi and Hiyori sat facing each other.

They were twins.
Their faces and voices were similar,
but in many ways, they couldn’t be more different.

Aoi talked a lot.
Hiyori listened well.

In front of them lay today’s pair test assignment:

“Convey the culture of ‘learning together’ at this school to someone who doesn’t know it yet.
The method is up to you—words, sound, movement.
Create one thing together.”

Hiyori picked up her pen without saying a word.
She hadn’t thought of what to write yet,
but strangely, she didn’t feel anxious.

Aoi smiled without speaking.

“Let’s try doing this one without talking.”

Hiyori widened her eyes in surprise—
then nodded right away.

They each placed their notebooks between them
and began a silent “conversation.”

—

— In Hiyori’s notebook, written in soft hiragana:

“Hey, why is it that when we’re together, the answers just come to us?”

— Aoi circled it gently and replied:

“Maybe because one person’s thoughts bounce back from the other.”

— Hiyori wrote again:

“Like a mirror?”

— Aoi nodded, then added:

“No… warmer than that.
I think we’re like letters—written to each other.”

—

At the end of the test,
they each tore out a page from their notebooks
and stacked them in the center of the desk.

Their teacher passed by and asked softly:

“Is this your answer?”

Aoi smiled and nodded.

“Yes. But we didn’t speak.
Today, we decided it would be a ‘day of fingertip signals.’”

The teacher said nothing,
but gently marked the page with a ○.

—

[Epilogue]

Later, as they left the classroom,
the two stood side by side at the shoe lockers.
Almost at the same time—without planning it—
they both stepped into their shoes with their right foot first.

“Today’s test was fun.”

“Yeah… it felt like we were writing a diary together.”

Their footsteps echoed softly down the hallway,
click-clacking in quiet harmony.