This comes from the end of episode 14, after Netto and Enzan's very first battle was interrupted. Netto stares at Enzan, who is across the street. The notes on the sketch point out that the light pole in front of Netto was a "book" layer, meaning it was a seperate layer in the scene. In the old cel technique, book layers were hand painted with watercolors. This was often used for such things as scenery or furniture.