The REWMOL processor (REal World MOdeling Language) is an interpreter written in C language. In the course of developing its original version, we had not paid any special attention to the processing of kanji characters. The reasons are, among others, 1) its development environment has shifted several times, and 2) no standard has yet been established for processing kanji characters by computer. We transported recently the latest version V4.0r of the interpreter from UNIPLUS <Ustation> to Micro VMS <Micro VAX II>. We took this opportunity to consider processing kanji characters, and made an effort to put such facilities in the transported version of the interpreter. The changes related mainly to character I/O and string data manipulation. This report is an outline of this augmentation-basic attitude of the original version toward these problems, our temporal lines of adding kanji character processing, our implementation of it, and some discussion.