To my future self: I must be surprised to receive this letter. A letter from your past self to your future self. There are many, many questions that I want to ask myself. Can I get along well with everyone now? Have you exercised yourself well? Can we fight side by side with everyone? Do you have fun every day? Have you ever let yourself regret it? ......... I asked quite a few questions! So the last question! ... Am I still alive in the world?