Is there a japanese-speaker who can translate this song?

/wsr/ is an extremely slow-moving board. You don't need to, and really shouldn't, bump your post until several hours have passed with no word. Especially when you're asking for help from people who are likely to be on the other side of the globe.

Let's see. I'll try my best.

First he says he went to buy something at the convenience store and died on his way home, or after he got home.

I BELIEVE the line after that refers to his lifeline being cut.

Then he says something that sounds like he's just restating that he died, and then it repeats with the same lyrics.
And at the end where it's all messed up, it's still the same lyrics, just all mashed together.

It's a very silly and somewhat dark song.