Damn, cannot wait for the next chapter and the end, seems to be more and more interesting...
I knew that it would be a penis growing formula!!!! Does she wanted to turn the school into a futanari school or sell and give it to a selected few.....
Damn....hope the 3 girl also have penises!!!
I am just wondering here, but if the formula make penis grow, will it have the same effect to futanari girls like make it even bigger, make them grow balls, make them grow more than 1 penis, or even cure them so they become pure girl without penis.....