You already know that you can manipulate Haruhi Metamo's color using room temperature. I just know a little while ago that you can change Shana's bikini transparency also by manipulating temperature.
By using hairdryer, i can heat her up so that the transparency of her bikini change. Just be careful if you're using hairdryer, don't make the figure melt because of the heat.
See the result? I guess her panties need more heat since it's not transparent enough. But i know that her bra has reached maximum transparency.
There are 2 secrets that this figure has. I have mentioned about bikini transparency, and the 2nd secret is her hair. You can see that her hair is different than the other figures have. It's somewhat transparent and glowing.
How to make her hair glow more? Take a flashlight, turn it on, and light her from behind. You'll see that her hair is somewhat glowing because of the light and hair transparency.