Search gender: all male female ウイサ Japanese Girl Names Variations. 1 names found. gender: all male female Name: uisa Katakana: ウイサ 0 Kanji: 初咲 Meaning: 初For the first time 咲Blooming. Flower buds open. It smiles. You can save your favorite names with NAZUKE PON > About Japanese Names > Search Japanese Names By Kanji > ウイサ Japanese Girl Names Variations.