Ajustar Corp - Manhwa

Assassination Classroom  Nothing is more important than you living your life . Because When you die , Nothing is going to matter whether Earth is safe or destroyed ,Being Alive is what is all about !  Some people might think ,it is true but what about my colleague and family behind ,they don't matter or what ?But Boi , I'm just kidding. Life is precious  , No matter if you die ,You will be remembered by others for your good work and love. This is lesson, I think Every Anime has and should have ! Assassination Classroom has this  something that died ,but will be Remembered Forever ! Our Lovely Home ,Earth is in a very big trouble ,as all of sudden a  powerful being has appeared and destroyed 70 % of the Moon .Now ,The moon is permanently in the shape of a crescent.. And it never will be Full moon day ! The Being That claims ,He destroyed the Moon ,Warns the Earthlings That In a year he will destroy the Earth just like moon. But wants to give them a chance to kill himself befor