Search gender: all male female ハセコ Japanese Girl Names Variations. 1 names found. gender: all male female Name: haseko Katakana: ハセコ 0 Kanji: 長谷子 Meaning: 長Long. Long distance or interval. A large range of time. Nurture. advantage. Relaxed. Eldest. Things that are at the top. Something that is useless. 谷Valley 子Children You can save your favorite names with NAZUKE PON > About Japanese Names > Search Japanese Names By Kanji > ハセコ Japanese Girl Names Variations.