SOFTWARE

Software built around
real operating needs.

This index introduces software planned, developed, and operated by TOKUNAGA Co., Ltd. Each product page explains its purpose, intended users, main functions, and current release status.

PRODUCT INDEX

01 PRODUCTS
Published Japanese learning tool

Kanji Branch Study

Kanji Branch Study

A Japanese learning tool for practicing readings and vocabulary by following related words that share the same kanji.
View product details

OUR APPROACH

Development continues
after the first release.

We review content updates, usability, data handling, and maintenance after publication, then use what we learn in day-to-day operation to guide further improvements.