YOU SAID:
prinny I wanna be the hero
INTO JAPANESE
プリニーのヒーローになりたいです。
BACK INTO ENGLISH
You want to become the hero prinny.
INTO JAPANESE
主人公プリニーにします。
BACK INTO ENGLISH
The hero prinny.
INTO JAPANESE
主人公プリニー。
BACK INTO ENGLISH
The hero prinny.
That didn't even make that much sense in English.