Just as a heads up, your Sanzo ref doesn't work.
And Kenren, to me looks more like a tattoo. You could use tattoo paper to make it to save the hassle for having to draw it everytime.
As for controversies...I never heard of anything involving chakras. 0_o
The chakra marker on Konzen to me looks like a slightly lifted piece(it's been a while since I saw Saiyuki so I don't remember how they apply it on...) but you could always look at indian bindis. There are very simple red ones that could work and they will stick on your forehead without any trouble.