As a document property, I know PDF has Binding Left/Right Edge on Reading Options. So normaly I set Right Edge for a book with vertical writing. However this property doesn't work on Acrobat Reader for Android and every time I have to swipe towards reverse direction (from right to left) for turning the pages for a Japanese book with vertical writing. I assume if the property works correctly, I can swipe towards right direction (from left to right) for the turning.