It has the cool feeling of a system text: hundreds of times of drops, quick upgrades, killing monsters and explosive equipment, it's fun from beginning to end;
But it is more than just fun: it writes about humanity in the last days, the bonds that have lasted for thousands of years, the redemption of "even if I am the source of destruction, I want to protect the people I love", and the deep feeling of "even if the whole world forgets you, I will remember you."
This is not an old-fashioned story of "a savior saves the world". It is a group of ordinary people who use the most ordinary love to fight against the fate of the entire universe.