Well, that confirms what most of us thought. That the older sister´s common sense has been overwritten and that she follows the orders, with no need of being hypnotized.
So, I have been looking at the second picture (left side) a bit and I wanted to point some things out. Looking at the Floor, the scene seems to be happening in the Room of Saitou. That in itself is not surprising, but have you noticed that he pushed a small device in his hand and the Hypno Blink happened? He is not using his smartphone in this scene. I think he might have created a better Hypno Blink device (probably a bigger one that is less portable) that bypasses the limitations of his older one. I am pretty sure he tested it on the older syster already (that is why she is still under his influence) and is using it on Saya now in that picture, with her fully aware that when she gets hit by it, she will be the eternal plaything of saitou. I can't wait for the chapter to make it to this site.
I really don't know I post this to find someone that buys it and upload it more faster or at least give us a summary of the chapter, because looks like the end of the series because of the color page. I want to read it now