Vampire Hunter D by Hideyuki Kikuchi. I found this at Amazon or B&N when I was looking for Japanese reading material. It would fit three challenges for me: Japanese, RIP III, and A-Z (V title). I have no idea what I’d be getting myself into by reading this title, but it seems it is quite popular and there is even a movie series of it. I believe there are several books in the series as well.
Death with Interruptions by Jose Saramago. Saw this at the library and knew I wanted to read it. BiblioAddict has a great review.
Evening is the Whole Day by Preeta Samarasan. Another one at the library. Logophilia has a very favorable review.
*Evening is the Whole Day* is on my wish list as well; yes, I’ve read positive reviews about it.
Good luck (and have fun) during the reading marathon this weekend!