Turns out I woke up early enough to read for another 55 minutes before the 24-hour period was up. Now I’m done for real though. The extra time was enough to read 206 pages of the Gravity Daze 2 manga.
Anyway, summing up my reading…
Seems like I read for 549 minutes, which is 9 hours and 9 minutes. In that time I read about 108400 characters of two short visual novels (starting and finishing both during the challenge period) and also partially from a much longer one, 71 pages of a light novel, and 206 manga pages (277 pages if adding up both the manga and light novel reading).