Search gender: all male female ユウゲツサイ Japanese Boy Names Variations. 1 names found. gender: all male female Name: yugetsusai Katakana: ユウゲツサイ 3 Kanji: 幽月斎 Meaning: 幽Faint 月Moon. A satellite of the Earth. One of the celestial bodies visible in the sky. One month. A Monday. 斎Purify oneself (e.g. heart, mind and body) You can save your favorite names with NAZUKE PON > About Japanese Names > Search Japanese Names By Kanji > ユウゲツサイ Japanese Boy Names Variations.