Nitori and the Scarlet Controller overlooked maps, lots of them. They showed geography and lines indicating possible rail lines. The two had thought up a plan to use Mayohiga as a sort of "rail Town", in which the railway subsidized humans and certain youkai to move into the abandoned village to start businesses and use the railway to support the reinvigorated village and within time, the rail line could be upgraded to be part of the mainline. If the plan was put up to the board members and they liked it, they will have to build more engines to handle more passengers and goods.
More engines will have to be needed anyway because of Hiroto's race, and he would be in the works for sometime, luckily Kenta was back doing work.
Nitori wanted to experiment with diesel engines since steam engines had worked out so well. They also used Ran's experience staying on the Island of Sodor to see if they could make improvements on the railway.
"You really think diesel engines could work, whatever they are?" asked the Scarlet Controller.
"Yeah. If the process worked on steam engines, I'm sure it'll work on diesel engines." answered Nitori.
However the two didn't know that diesel engines tend to act high and mighty and put themselves on a pedestal. The North Western Railway had had this experience before, but the Gensokyo Railway didn't.
Nitori brought out an original design of her's. It was a BR Class 08 with a slightly larger cab with the cab roof resembling those on old German steam locomotives.
"This is what the diesel is going to look like." said Nitori, showing the Scarlet Controller with her plans.
"Hmm...but don't we have enough small engines?" said the Scarlet Controller.
"Yes, but this is only for a trial."
"Ah. Okay."
The two continued on their plans.