In this world of the Mok Soul, every creatures have distinct features. 

People who travels to this world from Earth are called travelers. They have the ability to snatch the distinct features of the local creature. 
Our MC is one such traveler.
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Along the journey, 
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he found friendship and treason. He encountered eternal love and deep hatred. He experienced happy endings and tragedies.

- All that make him a mature young man.

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He found strange creatures. He encountered strange materials. He experienced strange events. 

He has some abilities the others lack. He lacks some abilities the others have. But he can't stop his adventure no matter what.

- All that make him question what existence is?
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Oh, he is our MC, Cank.