The word "boil" in Japanese is "waku" or "wakasu". And it's used with not only water but also courage, power, energy and so on. So "Boil Japan" is a trans-language double meaning. Japanese viewers can understand it at ease. And the lyric of this song is "I know what I have to do. It's standing up. I stand up." The last line before "Nissin" is "This country has fundamental strengths." It's a message to encourage Japan of damaged after 3/11 quake.
