ナナ

A certain 'denizen' of the 'night', who lives in Sanzen, the same town as Taiga and the others. 
A train spirit, or perhaps even, a god. 

Nana comes across as quiet and emotionless at first, but to those whom she has opened up towards, they realize that she can be quite the chatterbox. 

She is unable to leave the old SL (Steam Locomotive) that serves as her home, but on occasion, Taiga will stop by and give her someone to talk to. 

She has an inexplicable obsession with instant noodles. 

Likes: Instant noodles, sweets, junk food, and sometimes candy