Instead of Relics, True Ending (Restricted) is a long route focused on the collection of pages and fairies without skips or glitches.
The first 3/4ths of the run is largely an Any% Restricted run, with small detours to collect easy pages on that route. It also focuses on collecting on-route fairies (as 10 are needed for a page). The Swamp / Cathedral / Gauntlet segment is a carbon-copy of All Relics Restricted. The most unique part of the run is the last-10-minutes mad dash for final Laurels-locked pages.
Once you have experience with Any% Restricted, this is an equally-enjoyable next step as All Relics Restricted, and learning one will teach you most of the other.
Until I've had time to create a guide in this site's format, please check out the following videos.
Lost about a minute at the end of the run looking for the last page I missed / forgot, but I think the route is still mostly good.