Hello!
I was looking for a shibari simulation game, and it appears you are the only one who made it. :) I liked both the idea and the execution, and I really wish you and your project to grow.
I have some suggestions that will hopefully help you:
1) Release a Steam version. I think this game is suitable for Steam, and you'll get some extra recognition and money. And extra money is always good, right? :)
2) Add virtual reality support. This game would translate into a room-scale VR really well, and Unity has a built-in VR support. I have a VR headset (HTC Vive), so I can help you with testing if you want.
3) "Tied elbows" pose for arms and "Frogtie" pose for legs. They would add some variety and hopefully they aren't very difficult to add.
4) Usability improvements. For example, it would be better to call rope colors "white", "brown" and "red", instead of "1", "2" and "3". :) Also I'm having trouble with positioning the camera sometimes.
5) Character customisation. The ability to select hair color, hairstyle, skin color etc. Maybe also some additional clothing options (stockings, pantyhose, gloves, catsuit, ballgag).
I'm a developer myself, so if you need any help with development or testing - feel free to contact me.
Thank you for making this game. Good luck with future updates and happy new year. :)
P.S. I'm also from Russia. :)