/usr/include/ is in libkf5coreaddons-dev 5.18.0-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/KF5/
/usr/include/KF5/kcoreaddons_version.h
/usr/include/KF5/KCoreAddons/
/usr/include/KF5/KCoreAddons/kjob.h
/usr/include/KF5/KCoreAddons/KSharedDataCache
/usr/include/KF5/KCoreAddons/KStringHandler
/usr/include/KF5/KCoreAddons/KDirWatch
/usr/include/KF5/KCoreAddons/kmacroexpander.h
/usr/include/KF5/KCoreAddons/kpluginmetadata.h
/usr/include/KF5/KCoreAddons/kpluginfactory.h
/usr/include/KF5/KCoreAddons/kshell.h
/usr/include/KF5/KCoreAddons/kdelibs4configmigrator.h
/usr/include/KF5/KCoreAddons/kbackup.h
/usr/include/KF5/KCoreAddons/KTextToHTMLEmoticonsInterface
/usr/include/KF5/KCoreAddons/ktexttohtmlemoticonsinterface.h
/usr/include/KF5/KCoreAddons/kfilesystemtype.h
/usr/include/KF5/KCoreAddons/KCompositeJob
/usr/include/KF5/KCoreAddons/KJob
/usr/include/KF5/KCoreAddons/KPluginLoader
/usr/include/KF5/KCoreAddons/KUser
/usr/include/KF5/KCoreAddons/krandomsequence.h
/usr/include/KF5/KCoreAddons/KRandomSequence
/usr/include/KF5/KCoreAddons/kpluginloader.h
/usr/include/KF5/KCoreAddons/KMacroExpander
/usr/include/KF5/KCoreAddons/kprocess.h
/usr/include/KF5/KCoreAddons/Kdelibs4Migration
/usr/include/KF5/KCoreAddons/KPluginFactory
/usr/include/KF5/KCoreAddons/kformat.h
/usr/include/KF5/KCoreAddons/KUrlMimeData
/usr/include/KF5/KCoreAddons/kdelibs4migration.h
/usr/include/KF5/KCoreAddons/KFormat
/usr/include/KF5/KCoreAddons/KBackup
/usr/include/KF5/KCoreAddons/kjobtrackerinterface.h
/usr/include/KF5/KCoreAddons/kuser.h
/usr/include/KF5/KCoreAddons/KMessage
/usr/include/KF5/KCoreAddons/kmessage.h
/usr/include/KF5/KCoreAddons/kurlmimedata.h
/usr/include/KF5/KCoreAddons/KProcess
/usr/include/KF5/KCoreAddons/KTextToHTML
/usr/include/KF5/KCoreAddons/KExportPlugin
/usr/include/KF5/KCoreAddons/KFileSystemType
/usr/include/KF5/KCoreAddons/kjobuidelegate.h
/usr/include/KF5/KCoreAddons/kautosavefile.h
/usr/include/KF5/KCoreAddons/Kdelibs4ConfigMigrator
/usr/include/KF5/KCoreAddons/KAutoSaveFile
/usr/include/KF5/KCoreAddons/KJobUiDelegate
/usr/include/KF5/KCoreAddons/krandom.h
/usr/include/KF5/KCoreAddons/kshareddatacache.h
/usr/include/KF5/KCoreAddons/KPluginMetaData
/usr/include/KF5/KCoreAddons/kdirwatch.h
/usr/include/KF5/KCoreAddons/KAboutData
/usr/include/KF5/KCoreAddons/kaboutdata.h
/usr/include/KF5/KCoreAddons/kcompositejob.h
/usr/include/KF5/KCoreAddons/ktexttohtml.h
/usr/include/KF5/KCoreAddons/KShell
/usr/include/KF5/KCoreAddons/KJobTrackerInterface
/usr/include/KF5/KCoreAddons/kstringhandler.h
/usr/include/KF5/KCoreAddons/kcoreaddons_export.h
/usr/include/KF5/KCoreAddons/kexportplugin.h
/usr/include/KF5/KCoreAddons/KRandom