

Ichitaro's system disk contained ATOK 4 and a runtime version of MS-DOS 2.11. The same year, Ichitaro was released as its definite successor. jX-WORD Taro was priced at 58,000 yen, which was the middle price among Japanese word processor software, and sold 9,700 copies. The jX-WORD for the IBM JX was released and in 1985, jX-WORD Taro was released for PC-9801. JS-WORD featured mouse support and a graphical icon-based interface, but it resulted in poor performance.

Both were published by ASCII under their name. It was followed by JS-WORD 2.0 ported for PC-9801. When they contacted to ASCII Microsoft about a run-time license fee of the BASIC compiler used for their farm management software, ASCII had known JustSystem's Japanese software, so they asked JustSystems to develop a Japanese word processor software for PC-100. They demonstrated it at trade fairs, and received a positive response. After the release of PC-8801, they developed an invoicing software for it, which printed out estimations and invoices in Japanese. He founded the company as a dealer of business computers, and they started selling Japanese language software. Toshiba released JW-10 in February 1979, the first word processor for the Japanese language, but it sold less than their business computers. Kazunori worked at a subsidiary company of Toshiba, and he was interested in Japanese-language computing. JustSystems was founded in July 1979 by Hatsuko ( 初子) and Kazunori Ukigawa, and was incorporated in June 1981. Sanyo Electric already had a trademark right of the name, so JustSystems added a prefix " Ichi ( 一)" as they hoped the software won the best. Taro is also a common Japanese given name used for the eldest son. He died of sickness when Kazunori worked at the company. When he worked part-time as a tutor, one of his learners' names was Taro.

"Taro ( 太郎)" was named by Kazunori Ukigawa ( 浮川 和宣), a founder of JustSystems.
