Sorry didn't express myself well. I implied to mean I never said it was "impossible" for 26 yo people to have wrinkles. I wanted to say it's very uncommon, contrary to what this manga suggests, as if it was the norm. I've never seen plenty of 26 yo people who have wrinkles, sorry. That's why it's strange to me. In fact, the only young people I've seen with wrinkles were people with bad health : either heavily sick, either it was cause of drugs, alcohol or both. But people with good health, like the character of this manga, none.
But I can imagine my reality isn't everyone else's reality.
It can also be the climate and ethnicity. Also to add, when I say "wrinkles" I don't mean deep lines. I mean some shallow ones that you can see if you focus on the skin texture and how the light hits the skin. Most people hitting 25 start developing those. At least where I live, I haven't met an adult without some shallow wrinkles and texture.
Hmmm excuse me, since when do 26 years old people have wrinkles under their eyes? xDD What the heck lol