During my normal stalkings of Himaruya's blog, his new post was about a faceless man. Soon when i translated the text into engrish i saw
"Luxembourg's about the best I think I feel like a man who refreshing common sense. Bamboo look is not decided yet. I put out a little bit about history in four volumes?"
Probably Himaruya is leaning torwards Male!Luxembourg but still no offical confirmation on gender OR look.