BLACK's fight in this episode is seriously great as this is one of those times that BLACK is on the verge of losing. If he didn't call Road Sector to save him, or that he didn't wash the bubbles in his body in a nearby river, chances are he will die in this episode. As his body regenerates after he was saved by Road Sector, he analyzes his previous fights to think of a possible counter attack on the enemy.
The training scene looks fine I guess. Aside from the montage of BLACK breaking trees and rocks, this scene becomes a bit silly when BLACK saved a puppy who is hanging for his life! I find it silly because why the heck a puppy is seen wandering in an abandoned quarry, unless s/he is a bad master and decides to abandon a puppy in an abandoned quarry, and hoping that nothing bad will happen to the puppy. But it is all thanks to the same puppy that BLACK figured out a way to defeat the MOTW!
The fight between BLACK and the MOTW in the episode is really a good one. After doing some punches and evades the MOTW's bubble attack, Kotaro displays his wit in battle. Instead of charging the opponent again like what he did earlier, he observes his surroundings before doing his next move. In this case, after finding some spilled oil in the corner, he starts throwing barrels of oil to the MOTW before lighting it all up with a sparking electric wire! This made me realize one thing, why Gorgom is keeping some flammable materials in Crab Mutant's place?