Her expression looks gloomy because she's young! It's probably because she's hesitantly complying with the photographer's requests! Such a beautiful girl doing something like this! Isn't this what Girls Delta is all about?
I believe that a woman's breasts are considered beautiful if they have a nice shape when she lies on her back. That's just my opinion (lol). Breasts that don't sag and defy gravity. Breasts that maintain their shape when lying on their back, just like when standing. In other words, Yuako's 87cm breasts are firm and beautifully large. That's just my opinion (lol).
