Thanks for the clarification.
For anyone wanting even more in depth info:
Any fans of Nana, the anime? There's a whole thing about the number 7 as nana vs as shichi, and Nana is afraid of the death conotation. Also, shes like a dog, and her other friend Nana often calls her 'Hachi', a pun on both the number eight (hachi) and a famous dog named Hachiko!
Hmm, when I tried Firefox it defaults to wordbank (clicking on the characters) and doesn't show an option to use keyboard (on Chrome it has a toggle button underneath the answer area).
I don't know what's wrong with it BUT if you're feeling adventurous, you could install a Japanese IME! In the control panel under languages or whatever it's titled, there should be options for keyboards that'll let you install the microsoft JP one, which'll turn your normal typing into japanese characters.