Hahaha...more than six hours pass, and then four different people post within 10 minutes of each other. Crazy odds!

The answer is rain. The last stanza refers to lakes/rivers (the product), and clouds (the source). I'm pretty sure there aren't any scenes with rain in FF7. There might be rain when you summon Odin, but I didn't take that into consideration. ...There aren't any gunblades in VI.

Halenite, you're up.