Translation by paranoid-rhythm.

ガッツに勝るドラッグはなし / There Is No Drug to Substitute for Guts

Nestled in the ruins are two shadows
A monotone of black and white
In the so-called concrete jungle,
The tough town of Tokyo
These two met

Don’t lose! Have guts!
Granrodeo

Don’t become rotten, the duo out from nowhere
Though there is no enemy-like enemy
Overcome your own weakness!