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Jung Si-woo, 26, never had any friends, so he had nothing to do with him.

In the ordinary universe, he lived a normal life as an average citizen. But all of a sudden, the planet was faced with a big change.

The ‘Sky Castles’ gave wings and powers to certain people, but sadly Si-woo was not one of them.

Solo Login. Jung Si-woo, 26, had never had any friends, because there was nothing interesting about him. In the average world, he lived an average life as an average person. But suddenly, when the earth was undergoing a great change, The mysterious floating ‘Sky Castles’ has appeared. The ‘Sky Castles’ granted wings and powers to certain people. Unfortunately, however, Si-woo was not one of them.