Hello, Mofu. I like the game you made so much that I'll check everyday to see if it's updated.I think it is possible to add a click on the viewing page to make the futa girls react, if it is too troublesome, please ignore this suggestion. Finally, hopefully your game will get better and better.（The above content is from Microsoft Translation）（：
I think Mofu-san is planning to implement more interactions for the look feature, which would include seeing them get erect.
Also, I think Mofu is planning to include a human futa girl who will have an encyclopaedia for all the girls in the game and their penis in both flaccid and erect state, that can be viewed and documented once you've met them.