The modes are Paged (left to right), Paged (right to left), Paged (vertical), Long strip and Long strip with gaps. Long strip suits webtoons; the paged modes suit printed comics and manga.
- While reading, tap the middle of the page to show the menus.
- Tap Reading mode in the bottom bar, pick one and tap Apply.
That choice stays with this title. Revert to default hands it back to the mode every other title uses, which you set under Settings › Readers › Manga reader › Default reading mode. It starts as Paged (right to left).