[@Raineh Daze]

[quote]And the "see souls of the dead!" thing... well, uh...

Seiga, all the divine spirits hanging around, Yuyuko, Youmu's ghost half, the evil spirits in the Forgotten Hell, and probably Mima all spring to mind immediately for highly visible and annoying souls, spirits, etc.
[/quote]

Fair enough, I wasn't sure what the idea on ghosts were here. I'll take out that part. 

On the subject of trains, I wanted her to have a train for two reasons: Firstly, because trains are kinda sorta the natural evolution of the stagecoach dullahan were known for and second because... well, I like trains. I wouldn't say it would be that out of place because not only do Kappas pull things out of technology all the time and things do slip past the hakurei border (read: soccer) but also Gensoukyo was separated in the Meiji Era, which is right about when trains would come into being. 

The Nether Express is meant to be invisible to mortals but I actually intended that to not mean youkai. Also, for all of its qualities there are a few rules in that attempting to use it for anything other than ramming an opponent in a nonlethal danmaku battle like Yukari does - say, for example, using it to try to run over people head on or just massacre a crowd - would be a violation of the Danmaku rules. It's essentially meant to be her "space" like the Lunarians have Eientei, Remilia has the SDC and so forth; the fluff is mostly there to explain how it got into Gensoukyou.

As for the overlap, yes, that exists, but I'd say that makes things even [i]more[/i] interesting since Gensokyou is supposed to be a haven for mythology and legend; it's not surprising and should be expected that different legends of overlapping qualities might meet up. If anything, I actually look forward to the idea of Fiona and the Shinigami constantly getting into arguments/danmaku battles/little fights over souls or territory.