You can select one crew member from the following SSR list to board the train.
Joshua, Katas, Suen, Nayuta, Charlotte, Verlaine, Connor, Stella, Caroline, Margiela, Wensheng, Ilona, Tennie.

Due to a lack of trust in Night Chains, Citadel created its own version of the Laplace Protocol. It seems to have some impact on the future. The personnel at Night Chains find this unbelievable.