Unfortunately, there are not enough reminder of the fact they are mom and son, so all the potential taboo feeling are just missing, and with them all the excitement. Entire situation looks like just normal couple flirting, going out on a date and so on. Age difference between them is also looking almost minimal. So, it's somehow "off the mark". I mean, if it's about incest fantasy, then artist should remind us with right dialogues, right taboo tension, feel of prohibited and so on. If author wants to create just a nice porn/erotic story "younger man/mature woman" then it should/could be like this.