I think that the “female names end in a vowel, male names in a consonant” thing might not be the norm in non-English languages.

searches

https://ans-names.pitt.edu/ans/article/download/2485/2408

The relationship between names, phonology, and gender has been reliably demonstrated in studies focused on English names (Mutsukawa 2014; Cassidy et al. 1999). For example, in an analysis of male (n = 267) and female (n = 222) students, Slater and Feinman (1985) identified several phonological gender differences including: (i) more phonemes, more syllables, and a higher ratio of open syllables in female names in comparison to male names; (ii) a strong stress on the first syllable of both female and male names; (iii) a greater likelihood of female names ending in a vowel in comparison to male names; (iv) male names having a larger percentage of voiced beginnings when names begin with consonants; and (v) male names having a higher percentage of endings with high central unrounded vowels when names end in vowels, in comparison to female names.

A few studies have examined phonology, gender, and names in languages other than English. In a series of studies, Mutsukawa (2014) observed that first syllables in Japanese names illustrate gender difference. For example, the letter “a” in the first position is found in female names whereas the letters, “k” and “s” are more common in the name-initial position among males.

The historical analysis indicated that female names ended more frequently with the letters “a”,“e”, “i”" in comparison to male names both in Korea and the U.S.A. As illustrated in Figure 2(a), through each decade under review, female names were more likely to end in the letters “a”,“e”, or “i”. This finding is consistent with observations documented by Barry and Harper (2000).

Hmm. So maybe it does affect some languages outside of English if Korean sees a similar phenomenon, but it doesn’t sound like it’s a universal, if Japanese uses different conventions.