Sometimes it's just a matter of luck. Keep looking, ask for recommendations from friends or online manga communities. You might discover something you love soon.
Maybe you're not looking in the right places. Try different fanfic websites or forums.
It could be that Manga Rock has run into legal troubles and had to remove its manga content. Or, there might be server problems or maintenance going on that's preventing you from finding what you're looking for.
Maybe the app has been shut down or its manga library has been updated and some titles are no longer available.
There could be several reasons. Maybe the popularity of Berserk led to it being taken down from Manga Rock. Another possibility is that there were legal complications preventing its availability on that particular platform.
Maybe you're not looking in the right places. Try different search terms or check popular manga-related platforms.
It could be that Domdomsoft doesn't have the rights to host Overlord manga. Sometimes licensing issues prevent certain content from being on specific platforms. You might want to look on official manga sites or apps.
It could be that the platform you're on doesn't offer an AI manga filter at all. Or, there might be a technical glitch preventing it from showing up. Try refreshing the page or checking for updates.
Maybe you're not using the right search terms or looking in the right places. Try different online stores or manga-specific platforms.
πI recommend the following novels to you: - "Farming with Special Abilities: The Farmer's Wife Wants to Turn the Heavens Over": The female protagonist abused the scumbag farm work. The more she abused, the happier she became. However, she was schemed against by the cold male protagonist. Later, she colluded with the male protagonist. - "Spacewalker": characters from different planes travel and adventure in the Main God's Space. The time span is very large, and there will be many very interesting collisions. - "The Happy Life of a Reborn Dad": The male protagonist was reborn and decided to be a good father and take care of his two daughters. Although it looked like a family life, it also had many exciting plots and twists. - [The Book Desolation Savior: The male protagonist has a magical golden finger that can recommend books to all kinds of people. There would be many interesting encounters and recommendations. - "Douluo signed in for ten thousand years, Bibi Dong kneels and begs me to leave the mountain": The male lead was a signing maniac, crossing over to Douluo Continent and becoming a great god that didn't lose to Bibi Dong. It was very relaxing and interesting, especially suitable for readers who liked light novels and transmigration. I hope you like this fairy's recommendation. Muah ~π
Maybe Manga Rock doesn't have the license to host Tokyo Ghoul or it could have been removed due to copyright issues.