There is a Webcomic called Romantically Apocalyptic. It is a visual novel that has been going on for years. The creator just keeps adding. 300 pages.of highly detailed visuals in an eccentric story.
If you end up vibing with the story that'll definitely kill a lot of time.
Name is misleading, as I haven't seen much in the way of romance lol.
That's the one. The website changed format since I last read it. Now you have to sign in to switch to dark mode.