Bittersweet ending. This is the kind of doujin that I think could easily become a longer series and at the very least I'd hope to get some kind of omake if/when a volume is put out. I wouldn't ask for a convenient commune of Homo Arcnis, but knowing there are younger members still out there beyond these two would be nice.
Loved the credit page as well; I recently discovered Charred Thermos' videos and he does some really in-depth looks into the lore of Bloodborne. Such a good game.