Search gender: all male female Natsusa Boy Name Meaning, Kanji Variations. 1 names found. gender: all male female Name: natsusa Katakana: ナツサ 0 Kanji: 夏佐 Meaning: 夏Summer. It is one of the four seasons. Big. Prosperous. The name of a dynasty or country in China. China's own name. 佐Auxiliary. To help. To support and help by your side. To encourage. You can save your favorite names with NAZUKE PON > About Japanese Names > Search For Japanese Names > Natsusa Boy Name Meaning, Kanji Variations.