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Across the world, シゲハル (シゲハル ) is an extremely rare unknown gender first name. Much more frequently, シゲハル is the last name as well as the forename.
Shigeharu, Sigehal, Sigehar, Sigeharu, 繁治, 茂治, 重春, and 重治
ミス, シミズ, イシイ, タカダ, サトウ, スズキ, ヤマダ, ヨシダ, イヌカイ, オオイワ, タカハシ, ヒサマツ, and ワタナベ