Hehehe, look at data\data\_prog\tkato\pack.dat You can seeIf someone want to get inside the filesystem, this game is tricky.
Extract it with DSlazy or ndstool : you'll see only one file data/data.srl
This file itself is the real rom of the game, unpack it with ndstool or dslazy.
The text is in shift-jis with some html like code (like
for breaks) it's located in the data/menu directory.
"This is a Pen!!!
Oh Pen!!
It is a wonderful Pen!!!
I want to marry the Pen!!!!!"
A hint at a hidden English translation? Who knows