Hi there! Jav-It uses R18/DMM and mgstage as primary scraping sources with javdb as a fallback secondary source. There is no technical reason JavLibrary couldn't be added as a scraping source, it's just that the project is being picky about what it considers complete "sources of truth". If you feel JavLibrary is important, I suggests joining us on Patreon. If enough people vote for it under feature work, support could be included in a future release.
