Around the world, Watashiguchi (Watashiguchi ) is an extremely rare unknown gender forename. Much more frequently, Watashiguchi is the last name as well as the forename.
Ken, Osamu, Kiichi, Kiyoshi, Takeshi, Tsutomu, Masayuki, Takeichi, Takemasa, Takeyoshi, Takeyasu, Takehide, Takekazu, and Takemitsu
) is an extremely rare unknown gender forename. Much more frequently, Watashiguchi is the last name as well as the forename.