I will share what I know about this, this Teru-Sama: It prevents you from from having link battles, and the only way to eliminate it is to start a new game or use a Mega Memory card for GameBoy to Save the thing on it.
I might also note that Teru-Sama comes in an infinite amount, and sells for like, $193357 or something like it.
But what does this mean? What is the definition? I recently found out that it is a Japanese name for something, but what does it stand for???