I wouldn't recommend looking for free manga on unauthorized sites. It's illegal and can harm the creators. You might try some legal platforms that offer free trials or limited free content, like Shonen Jump.
Websites like KissManga and MangaFox are often used. They offer a large collection and are user-friendly. However, be aware of potential ads and the legality of some content.
Feedbooks is another website worth checking. It offers both public domain and original free e - books. There are quite a few vampire novels available. You can explore different genres within the site, and the vampire section usually has some interesting picks. It also has a user - friendly interface which makes the reading experience pleasant.
Open Library is another excellent website. It has a large number of novels available for free reading. It functions like a traditional library in the digital world, allowing you to 'borrow' books for a certain period. You can explore different genres and discover new novels easily on this site.