Is there a way to make the text in one box like in most of the other VNs? Instead of two?

It's wierd right? I can read for like 10 hours straight, for weeks, but a bit too much text on the screen at the same time and it feels overwhelming for some reason. 
And I do read normal books, i don't know why VNs have such an effect on me, I just look at the screen and think to myself - "I wish it would be just in one box" xD