Shoumetsu Toshi  

After Lost, 消滅都市, Annihilated City

A man named Takuya, a professional by-the-contract courier, meets Yuki, the only survivor from a vanished city. They set off to find out what happened to Yukis missing father, who was last heard in the lost city. However, they face unexpected challenges on their journey. The reality is particularly shocking for Yuki as she discovers that those left behind are dealing with strong emotions and a mysterious group operating from the shadows. As Takuya and Yuki travel together, they deepen their bond and uncover the mystery of the lost city.