Rail Wars! Temporada 1 Episódio 9

Naoto and K4 head toward Yokokawa as the rain plummets down. Haruka says the track from Usui Bridge No. 3 to Yokokawa should be safe since its regularly maintained for the opening of the Usui Abt Railway, but the downgrade is steep, they cant slow down, and the narrow tunnels make it difficult to handle curves... Theyre in a serious pinch when Iwaizumi takes action!