Yunyun got on top of Xiaoyun and slowly pushed her sukumizu to reveal an opening almost the same way as Xiaoqi earlier.
But Yunyun noticed Xiaoyun's cock wasn't fully erected yet.
"Xiaoyun... c-can you get it up?" Yunyun shyly asked.
"I can't just get it up on a whim," Xiaoyun replied with a straight face.
In reality, he was holding back on purpose to see what Yunyun would do next.
Yunyun thought for a second, then decided to squeeze his cock in between her thighs.
"Come on, just get hard already..." Yunyun mumbled in desperation as she kept moving her thighs up and down as it pulled his foreskin back and forth to try to simulate him.
After a while, Xiaoyun's cock finally became fully erect as the muscular thighs behind Yunyun's soft skin were constantly teasing him to the breaking point.
"Finally..."
Yunyun repositioned herself again to let her opening be right on top of his erect cock, and sat right down on it.