Yoshimitsu Systems
Yoshimitsu Systems head office in Kyoto at rainy dusk: a low charred-timber building with amber-lit labs behind a long upper window, a granite wall with a bronze 良光 plaque, an indigo noren with the aperture emblem at the entrance, a red maple, and a pagoda on the forested hill behind
Company · 会社概要

One building, still lit.

Yoshimitsu Systems has worked from one site in Kyoto since 2089: a timber building with the labs upstairs and a loading door at the side. Everything we ship is designed, built, and signed off under this roof.

01 · Company profile

The short version.

We started as a one-bench workshop and grew into four disciplines that share one architecture. The building got bigger; the rule didn't. A Yoshimitsu system has to be dependable, legible, and repairable by the people it is shipped to.

The full story, from the first prototype to the SS Mariposa, is in our heritage archive.

会社概要 — COMPANY PROFILE
NameYoshimitsu Systems 良光
Founded2089 Kyoto
Head officeKyoto · Earth · Sol III
RepresentativeIshida Haruko 代表取締役
BusinessCompute cores · memory lattices · navigation · LCARS interfaces
FacilitiesLab A · litho bay · imaging lab · calibration bench · Bay B2
Lattice cert.Archival since 2118
Field record225 × Model 4077 SS Mariposa · 2123
02 · People

The people who sign it off.

Every system that leaves Kyoto carries a signature. These are four of them.

Portrait of Ishida Haruko in the head office lobby at dusk: short silver-streaked hair, a charcoal jacket with reading glasses in the pocket, a gold 良光 sign on the timber wall behind and a pagoda through the window

Ishida Haruko

Representative Director · 代表取締役

Started at a bench in Lab A and still reads every field report that comes back to Kyoto.

Portrait of Declan Lebowski at an engineering bench at dusk: long curly grey-streaked hair, a full beard and black glasses, a black 良光 work jacket, an exploded view of core modules on the monitor behind and Kyoto through the window

Declan Lebowski

Chief Architect · YS·CORE

Keeps the Model 4077 serviceable. Owns the hot-swap module design, and the rule that no core leaves Kyoto unless the people it ships to can repair it.

Portrait of Morimoto Kenji in the lithography bay under amber safelight: close-cropped hair, a navy cleanroom jacket with a mask pulled below the chin, and a wafer carrier glinting behind

Morimoto Kenji

Lattice Process Lead · YS·LATTICE

Runs recipe ML-P001, six wafers at a time. No step advances until the one before it reads OK.

Portrait of Takeda Aoi at the calibration bench at night: dark hair tied back, a black work jacket with white gloves in the pocket, a YS·NAV 7 console and star simulator behind and Kyoto lights through the window

Takeda Aoi

Navigation Calibration Engineer · YS·NAV

Calibrates every YS·NAV 7 against the star simulator before it goes into its case.