Arknights: Even If I Become the Demon King

This is a story about a young man who uses his own methods to protect the few beautiful things left in the world, create a beautiful refuge, and build a new era.

(Readers who haven't played or aren't familiar with Arknights can read this as a novel, so don't worry about not understanding it. The protagonist hasn't played Arknights either (laughs)~ He sees this world through the eyes of an outsider.)