The Old Dynasty Fades, a New One Dawns, and the Era Turns

A fanfiction based on Arknights. This is a new writer's first book, so please be kind. Some of the original story may be included at first, so those who know it can skip ahead. Things will gradually get better as the story goes on.

On the continent of Terra, Originium and Catastrophes ravage everything, yet humanity always manages to survive. However, nations and organizations scheme against one another, waging open and covert battles. Amid these hardships, can Rhodes Island, an organization striving to find a way for the Infected to survive, continue onward and grow stronger? And what challenges lie ahead for them?

(A friendly reminder: the plot mainly draws on the game Arknights. If anything is unclear, you can check out the game's story.)