I'm going to try to put my thoughts into understandable words. It'll sound emo, but actually it's a really happy thing...
First I need to explain the title, "Last End." This is a song from a Legend of Zelda game called Majora's Mask. To be short, the idea is that due to a certain dark force, the world called "Termina" is going to end in three days, when the mood collides with it. Your main quest is to stop it, and you have a lot of little "helping people out with things" quests on the way. Conveniently, you have the ability to reset time, to the beginning of those three days, over and over.
"Last End" is the name of the song that plays