Go to the person that is sitting down next to a table, close to the door that tells you to complete the human gateway. Talk to him and he give you a ring. Go to the left until you see the moon. Press [Space] and you will earn a skill point. If you want more, save the game. Select "Restart" at the bottom right corner. Select "Start", choose the blue ninja, and go to any portal. Do not talk to the man until you die with the blue ninja. Load the game, then talk to the man again and repeat the trick.