I really love this Yuugumo. Not because she's precocious and sexual as heck, but only because she's so mature. Yeah, she's trying to get in admiral's pants, but in a grew-up way, thinking as a woman and trying to seduce him. But the most attractive for me is that she takes her sister's intromissions pretty well, like a older sister, and, like in this strip, just moving on.
She reminds me as a married wife with kids who is trying to have sex with her husband but whose children just interrupts her sexy time.