Well, traditionally, most Japanese manga are read right to left. But nowadays, with the influence of global comics, some manga are designed to be read left to right. It really varies based on the origin and style of the manga.
Not all Japanese manga are read left to right horizontally. The reading direction is often determined by the conventions of the manga industry and the creative choices of the author or publisher. Sometimes, it's a matter of experimentation or targeting a global audience.
Most manga are designed to be read from left to right. This is the standard format in many regions. However, there are some exceptions depending on the origin and style of the manga.
It depends. Most modern manga published for a global audience are read left to right. However, manga originally from Japan might be read right to left, especially the older ones.