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This is a world called "Dragon Realm" where humans and dragons live in peace. Human beings are born with a crystal called dragon crystal. This crystal allows you to communicate with the dragon mentally. Dragons are the most powerful creatures in the world. They live in peace with humans and fight against enemies together. When a dragon is born, he will have a various grooves on his forehead to let his master find him! Live happily together!

Yin and Yang have been inseparable since the beginning of time! See how the father and the son maintain these two relationships.

I haven't figured it out yet, so let's write it down first. I'll think about it for a few more days. Thank you!