It can be a persons facial expression or the surface of an object that’s shown
it means he will do something as long as he can until he dies or physically can't.
Answer:
They Both Die at the End is a devastating yet uplifting story about two people whose lives change over the course of one unforgettable day. According to the book synopsis: “On September 5, a little after midnight, Death-Cast calls Mateo Torrez and Rufus Emeterio to give them some bad news: They're going to die today.