Faker\Provider\ja_JP\Person::firstKanaName PHP Method

    public function firstKanaName($gender = null)
    {
        if ($gender === static::GENDER_MALE) {
            return static::firstKanaNameMale();
        } elseif ($gender === static::GENDER_FEMALE) {
            return static::firstKanaNameFemale();
        }
        return $this->generator->parse(static::randomElement(static::$firstKanaNameFormat));
    }