Search gender: all male female Masanatsu Boy Name Meaning, Kanji Variations. 1 names found. gender: all male female Name: masanatsu Katakana: マサナツ 0 Kanji: 将夏 Meaning: 将A person who leads an army. One of the ranks of military personnel. To support. To move forward. To obey. To offer. 夏Summer. It is one of the four seasons. Big. Prosperous. The name of a dynasty or country in China. China's own name. You can save your favorite names with NAZUKE PON > About Japanese Names > Search For Japanese Names > Masanatsu Boy Name Meaning, Kanji Variations.