This is just a suggestion, but the formatting of the original web novel is not ideal for an e-reader as there is a lot of wasted space. Print publications and e-books typically have no spacing in between paragraphs and instead delineate paragraphs with indents like so:

This greatly improves readability, especially in dialogue-heavy sections, and can be done fairly trivially by adding a stylesheet:
@charset "utf-8";
/* Styles for Worm */
p{
text-indent:2em;
margin-bottom:0px;
margin-top:0px;
}
Traditionally the first paragraph in a chapter is not indented, but I haven't bothered with this for the few web novels I've reformatted since it requires per-chapter processing and I'm lazy. But for your project it may be worth doing as well.