@NaraMoore@sakurajima.moe @Kingu i don't agree with you on manga.
I read the entirety of 20th century boys, monster, reki yomi, tsuredure children, beasts of abigaille, city, and many others on mines and it was a really enjoyable experience.
That is, if you have a model that can go landscape for double-pages art. But even if you don't, koreader can force landscape for you with a little button.

Speaking of koreader and manga, you can even use rakuyomi to manage your reading collection and automatically download chapters from "various sources". I use it a lot