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Is there a bug on TVPaint? I seem to be unable to type Japanese Completely and comes out square unless I have to change I have to change into Native Japan Format from the Windows Control Panel. Is there a work around for it not having to change into Native Japan Format?

Main Problem down below:
I also having trouble in typing Japanese Fonts Horizontally for 'Words'. I can't seem to type it. It becomes backwards. I can type 'vertically' correctly but not Horizontal. How do you type Japanese Horizontally but not backwards? It's very confusing.

Sorry, I cannot help : I'm not using Windows and I have no issues with Mac when I write Japanese characters.

Yes there is a bug on Windows, and it's on our todo-list.

If you have a real native Japanese Windows (changing the language in the Windows Control Panel does not make your Windows a native Japanese, it only changes the displayed language) you will be able to write in Japanese without issues.

I regret fot the ploblem occurs with Windows and Mac OSX's "Basic language: Japanese" boot with TVPaint Animation.
By the way,

TVPaint Animationテキストツールのフォントリストから日本語書体名の先頭に「＠」の付いた書体を選んでいませんか？
Have you use named "@+(fontname)".ttf or .otf Japanese language font on TVP text tool ?