From Japanese 月 (ru) meaning "moon", 流 (ru) meaning "current, a sink, flow, forfeit", 涙 (ru) meaning "tears, sympathy", 琉 (ru) meaning "precious stone, gem, lapis lazuli", 瑠 (ru) meaning "lapis lazuli", 留 (ru) meaning "detain, fasten, halt, stop", 羅 (ru) meaning "gauze, thin silk", 羽 (ru) meaning "feathers", 蕗 (ru) meaning "butterbur, bog rhubarb", 陽 (ru) meaning "light, sun, male" or 麗 (ru) meaning "lovely, beautiful, graceful, resplendent" combined with 々, a phonetic character indicting a duplication of the beginning kanji, 夢 (ru) meaning "dream", 流 (ru) meaning "current, a sink, flow, forfeit", 琉 (ru) meaning "precious stone, gem, lapis lazuli", 瑠 (ru) meaning "lapis lazuli", 留 (ru) meaning "detain, fasten, halt, stop", 陽 (ru) meaning "light, sun, male", 優 (ru) meaning "tenderness, excel, surpass, actor, superiority, gentleness", 月 (ru) meaning "moon", 空 (ru) meaning "sky", 羽 (ru) meaning "feathers", 雨 (ru) meaning "rain", 彩 (ru) meaning "colour", 輝 (ru) meaning "radiance, shine, sparkle, gleam, twinkle", 愛 (ru) meaning "love, affection" or 要 (ru) meaning "need, main point, essence, pivot, key to". Other kanji combinations are possible.
Usage of this name is, most likely, influenced by the name
Lulu 1 or
Loulou.