Kavita
www.kavitareader.com
Lighting fast with a slick design, Kavita is a rocket fueled self-hosted digital library which supports a vast array of file formats. Install to start reading and share your server with your friends. book reader, self hosted, manga, comics, free, manhwa, e readers, electronic book readers, digital book reader, cartoon

Well, that depends if people like the feature request enough… and you can vote.

Request: Federate Kavita

"Lighting fast with a slick design, Kavita is a rocket fueled self-hosted digital library which supports a vast array of file formats. Install to start reading and share your server with your friends. "

Screenshot of Kavita Reader

Kavita is cool FOSS project. It is general-purpose but focusses on Manga and Anime and such.