Who we are, why we build, and what we ship.
Build products that maximize how efficiently you work and learn, grounded in scientific evidence.
mibuki is not a personal label. It is a brand built around that one sentence. The lineup will grow; the standard will not. Whatever the domain, we only implement methods whose evidence we have checked.
A day is 24 hours, and nobody gets more.
If the problem is “I want to, but I have no time,” the only move left is to raise the result you get per hour. So we do not invest in ways to try harder. We invest in the science of efficiency.
What we adopt and what we refuse is decided by three principles: choose by effect size, remove friction, and measure it, then publish it. Those criteria, and the list of things we will not do, are written out on Approach.
Read our approach →mibuki was started by one person. Here is who is accountable for it.
Founder / mibuki
Founder of mibuki. Plans, designs and builds the products, and is accountable for the principles — and the refusals — written on this site.
GitHub →When each thing started, and when one stopped.
| When | What |
|---|---|
| December 2024 | Work begins on LangDict. This is where mibuki starts. |
| March 2025 | mibuki.dev goes up. Work begins on kikeruka. |
| October 2025 | Work begins on Lofi Station. |
| May 2026 | Work begins on Atom. |
| October 2026 | Decided to discontinue Atom. |
Each date is the month of the first commit in that product's own repository — taken from the history, not from memory. The last row is the month the decision to stop was made.
Four products today, all built to the same standard.
Last updated: July 2026