【Piyo Korota】Longjing District Research Journal 5

When [Sakuraba] wakes up in the home of a resident of the Ryuui District, she is astonished by the changes in herself.
It is so huge that it is standing up in the morning. But it is still an average erection. Its true value is shown when it is erotic.

You can’t stop the urge against your will as the enlargement also increases your sex drive.
One on one with the upper dragon. The evolution of Sakuraba is unstoppable.