This is, compared to the other songs, more depressing and emotional, kind of like the songs of Tsubasa Chronicles.

When I read the translations, it was heartbreaking.

Cry your heart out.

China is singing to Japan, I'm pretty sure, the second half he says "do you remember the moon we gazed at?"

So sweet..... *sniff*

And I'm sure that many of you don't know what happened after China gazed at the same moon after Japan......read what happened in hetarchive, the comic strip is The Early Days of Japan and China.