At first, the world of K2 with number 2 was very peaceful and happy, then suddenly war appeared without their knowledge, which made monsters take advantage of the opportunity to capture number 2 and turn number 2 into a tool, to destroy and dominate the world, turning number 1's friends into villains, and number 2 killed all of his friends (except number 7 and number 9), causing number 1 to become desperate and unable to what to do, so number 1 becomes colder, less talkative but also more obnoxi