Both Conductors have their own interrogation with the Passengers, but the routes presented in the story are interchangeable and not linear. Depending on the answers in the voting form, one route will become canon, while others will stay as AUs.

4: What is the purpose of taking photos if you can't show them to anyone? 7: I can show them to you. Wanna see? 4: Thank you, I can see what's in front of us with my own eyes. 7: Well, I mostly save them as drawing references for later. 4: And what is the purpose of you drawing? 7: To pass time. I knew this train doesn't allow technology like phones, but I'm still surprised how boring it is to be here. 4: I understand. I'm not exactly used to interacting exclusively with people who are…  Hm… 7: What? Are we some kinda difficult people? 4: No. I am a difficult person.  Anyway, the lack of entertainment is very noticeable.

3: This is for you… 7: Oh? Eh? Wait, it's a plush kitten! Did you make it yourself? 3: Mhm… 7: Hold on, does it mean you made Fuel too? 3: Mhm… 7: That's amazing! So you can sew plushies!  Hey, I would never be able to make something like that!  Thank you, thank you! It'll live in my room now! Hmm, how should I name it? Gimme a second… … Droplet! 

3: What is your… favorite color? 7: Hmm, I'm not sure… Well, I like to wear brown because it looks the most neutral on me, yeah, you know? But like, how else is “favorite color” used in practice?  Umm… If I were to pick an ice cream, what color would I choose… Orange or pink would look the tastiest! It immediately makes you think of fruits and berries, right? When I go outside, I like to see the color of the rainy sky… Though I'm not sure I like it when it rains… I don't hate it, but I always thought that the calming nature of rain is a bit overrated… 3: … 7: Ah, what about you? 3: …Pink and blue. 7: Hey, so the clothes you're wearing are spot-on! 

0: …Excuse me? What are you doing? 7: Sooner or later, someone must arrive and restock the food. I'll get to the bottom of the mystery of who cooks all this, and where is the secret entrance to the kitchen! 0: Huh. Good luck. I guess I'll be taking you company. I've been wanting to train my skills at chess for a while now, so I'll be quietly minding my business at the game table. 7: Eh? A game of chess? I wanna join! 0: You said the other day that you don't know the rules and can't memorize them. 7: Maybe this time I'll be able to memorize! Don't give up on me yet! 0: … 7: What’s with this face? It's as if you just saw a ghost— Huh?! The food simply appeared while we both weren't looking?!

0: I'm sorry for intrusion. I just recognized the book that you're reading. It's a self-help book, isn't it? 2: … 0: If there is something burdening you, I'm here to listen. Receiving an input from a person with a different perspective can often make you find the way out of a seemingly trapping situation. 2: …There's nothing in particular… I just feel…  Well, that might be the problem — that there's nothing… …It's like I'm always sleepwalking… Although it might be silly to say it in a place like this. I was wondering if something could help me wake up, for just a bit… 0: Oh? So, were you able to find out anything from this book? 2: … For a person like me… I’d never be able to help myself. But that's why I'm relying on the end of this road for that… Isn't it the case for everyone else, too?

3: Got you! 2: …Huh? 3: Hehe. I noticed… You always come out only when no one is around, and take food with you in your room… But it must be so lonely! This way, you'll spend the whole trip in complete loneliness! So… How about we have lunch together this time? 2: … …Fufu. Alright. Let's do that. 3: Yay! 

0: Do you have a legal guardian with you? 3: No. 0: What? How do they allow a child to travel by themselves on a train? 3: … 0: Do you get along with any other adults here? 3: …Seven… 0: That's a relief. Hopefully— …Wait. Seven? He constantly hangs out with that weirdo. No, this can't be good.  3: She always ignores me anyway… 0: Huh? 3: When we're alone, or I try to join a conversation she's having with someone, she just ignores me… 0: Only more reason to not get near her. If you need an adult to rely on… I guess I have no choice.  I'll keep an eye on you.