Search gender: all male female マイイチ Japanese Boy Names Variations. 1 names found. gender: all male female Name: maichi Katakana: マイイチ 0 Kanji: 米一 Meaning: 米Rice 一One. The first. Kanji for the number 1 (one). To be the most superior. To begin, to put things together. You can save your favorite names with NAZUKE PON > About Japanese Names > Search Japanese Names By Kanji > マイイチ Japanese Boy Names Variations.