User blog comment:Lilyxflower/The world of DITF is a cult/@comment-26567684-20200616043901

1) Greenery of the abandoned city - I like to think the city was abandoned once the plantations were built and ready to go, and APE had ordered all of humanity to move into them because of the Klaxosaurs and the global desertification. Maybe this city was hit less hard by the desertification because no magma energy facilities seemed nearby but it was abandoned solely in favor of living in the plantations.

2) Souls Released after VIRM defeated - I think all souls were reincarnated into new bodies just like Hiro and 02. VIRM is an energy consuming alien species and they absorb the souls of all living beings they encounter, and once those souls are absorbed, the physical bodies of the beings die instantly.