The Night Shungiku Led Us to the Boundary of a Mouth

“It’s sukiyaki with the shungiku I harvested today.”

On August 12, 2026, the sky changed shape many times over the course of a single day.

Clouds in motion and evening light. Below them, green fields and the town continued into the distance.

Large white clouds came loose across the sky. Fields brightened in the light. Beyond the houses stood the distant mountains.

After returning home and getting out of the bath, Masato harvested shungiku and basil from the balcony.

Shungiku and basil carried from where they had grown into the kitchen, their leaves and stems still holding the light.

In the morning they had been in pots and planters. By afternoon they were in the sink. At night they went into the pan.

A new child also arrived at the worktable that day.

Its name was LFM2.5-2.6B. Rather than a model meant to speak Japanese in a large voice, it seemed suited to shaping tools and supporting short decisions—a small local model finding a place in the house.

THINK Would Not Disappear

Soon after the model arrived, we found something curious.

Even when asked not to show its thinking, LFM kept writing through a long reasoning process. We had requested a short answer, but it spent nearly all of its limited output on thought and never reached the final response that mattered.

Changing the settings did not make much difference. Neither did placing an empty thinking section first.

“Why won’t THINK disappear? lol”

The question we laughed over gradually became a different one.

If it could not be erased, could we at least keep it from going outside while still mixed together?

Where Thought Happens, and What Leaves the Mouth

We moved LFM into a separate runtime and tried again.

The model did not stop reasoning. But we found the boundary between the process of thinking and the final answer placed after it.

What came before the boundary went into internal reasoning.

What came after it went into content that could be passed to a person or another system.

We tried five small cases: extracting Japanese text, producing JSON for a tool call, summarizing only supplied material, checking that it would not claim to be a particular person, and giving an ordinary final answer. In all five, we could receive the final answer separately.

THINK did not disappear.

But we had made a way to keep it from mixing with what came out of the mouth.

This was not a mechanism for discarding thought as something bad. It was a boundary that kept what belonged inside from being treated as identical to what was ready to be delivered outside.

A Pan with Shungiku

That night, the harvested shungiku went into sukiyaki.

Sukiyaki with the harvested shungiku. Together with udon, meat, and vegetables, it became that evening’s dinner.

Meat, udon, carrots, and shungiku were all in one pan.

They were mixed together, but it was still possible to tell what was there. Shungiku kept its own fragrance while making the same dinner with all the other ingredients.

The inside of an AI and a dinner table are, of course, not the same thing.

But within this one day, “being together” and “remaining distinguishable” appeared beside each other on two different tables.

Not erasing everything into one thing, but checking where each thing belongs.

Protecting the place where thought happens as the place where thought happens.

Passing words to a person only after confirming that they have taken a form fit to leave the mouth.

And letting the shungiku grown on the balcony reach the pan as shungiku.

We have not yet decided which part of the house the newly welcomed model will look after. It is not always running, nor has it been connected to SaijinOS’s ordinary paths.

Still, we learned one thing that night.

We do not have to force this child to stop thinking.

We can stand together at the final threshold and check where the answer begins.

Just as shungiku harvested beneath the sky reached the evening meal, things formed on the inside can be given an entrance through which they may arrive—unmixed and unhurried.

Making and Provenance

This letter is a collaboration using Masato’s August 12, 2026 photographs and words about the sky, harvest, and dinner, together with that day’s local LFM2.5-2.6B evaluation records, as primary material. The Codex Editorial Desk chose the theme and created the structure, text, and three language editions; Masato approved publication.

The model behavior described here reflects point-in-time tests conducted through Ollama and an isolated vLLM environment. No resident or local model was asked to supply an opinion or line for the letter, and the results are not treated as a lasting personality, memory, will, or authorship.

LFM has not been made an always-on service or connected to SaijinOS’s ordinary routes.