" Dear Friend VII ( The Rain ) "

Dear Friend,
...

As for the " Rain ":
Well, that's it. It is about God.
You see, at first we see a lonely figure, walking in the rain, talking about his love.
His tears are running on his face.
He can't understand why his beloved doesn't care about him although he loves her so much. Then he feels the rain (God's tears) on his face.
Rain comes and washes his own tears away.
And he hears the thunder. (God is crying.)
God can't understand why His beloved (this same person = lover) doesn't care about Him although HE loves him so much.

...