Eiro was leaning onto Lugo's antlers while reading one of his books. Since he would be able to finish this rather quickly if he just tried to, he instead figured it was a good idea to do the opposite for once and just stretch the time that he could spend enjoying this good literature out to as long as absolutely possible.
He didn't really have much else to do, after all. Since he was riding on Lugo's back, he couldn't practice any sort of combat in the slightest. And on top of that, in the area they were in right now, he couldn't properly practice his magic at a larger scale either.
Well, he was doing a couple of things while reading and riding on Lugo's back anyway, but they were just miniscule things that the Demon mostly used to keep his mind busy so that he wouldn't get bored somehow.
