How does none of the commoners see how similar their faces is

Exactly what I think in each chapter....so after he got customisation i thought he would change up the characters .....well except the lich King everyone looks the same now we have the elf and since he got a bit customized he is slightly different but look at the holy knight and barbarian and the merchant they all have the same face plus when the holy knight mc and barbarian mc fought together with those holy knights and elfs ....I thought why is no one questioning anything they look identical like twins or siblings.....well that's because it's a manhwa I guess common sense is twisted

Well according to novel harely could control his facial muscles to change his facial structure but not his colors, vampire (heinze the second) changed by evolving becoming more handsome and having a colder impression, Harrison actually had entirely different appearance (he looks slender and pretty) with slight resemblance that is hard to notice, that only leaves the merchant hubert and paladin heinrech have entirely different body types and persona that is hard to make the connection and later on his hair color changes making it harder to see, and ppl who know heinrich before that never meet hugest for long or close enough to see the resemblance