This picture is the first time I heard of The Witch's House. Since I love Yume Nikki and Ib, I decided to check it out.
I just finished it and... feel rather trolled. And I blame this picture, since it made me curious. Because that totally makes sense. Still a good game, though.
Also a nice picture. That's not how I imagined the knife in TWH and Ib with a katana is rather odd, but I guess Okuva just wanted to have her a blade weapon too, since all the others have one, and thought that katanas are cool.