コンニチワンーツー!
I really wanted to know what this song was about so I decided to translate it :D
I just translated the part he sings, not the "humbahumba" part. It's too difficult to read haha♥
My japanese is far away from good so there totally might be some mistakes, feel free to point them out!
There are also parts I didn't get.
Note: Maru played a lot with the pronounciation of the word "隆(ryuu / high, noble)", the first kanji in his given name.
Example: あげ隆 -> あげる. I wrote them romanized as "ageru" and not "ageryuu", he sings it more as "ageru" anyways :P
When I noticed this, I really had to smile. Using his name kanji really makes it his song, doesn't it?
(Subaru plays too much with words in his song so I won't translate it haha 8D )

Maruyama Ryuhei - Wanshanronpin ♬



Please don't claim them as yours, but you don't need to credit me or something ♥
Just spread the Maru love :D