![](https://i.mydramalist.com/qkgD5t.jpg)
![](https://i.mydramalist.com/XrN2dt.jpg)
The female lead lives in the modern Republic of Korea, while the male lead lives somewhere more outdated and dangerous. Both have travelled between their 2 'worlds'. Especially at the end of both dramas, when they have to go their separate ways and the main lead has to return to where he is from.
![](https://i.mydramalist.com/qkgD5t.jpg)
![](https://i.mydramalist.com/eoD8Wt.jpg)
A man from another world enters a new world he isn’t familiar with, until he comes in contact with the female lead. After finding her, he clings to her and tells her where he is from - to which she thinks he is crazy. Until the female lead gets brought back into his world and finally believes him.
![](https://i.mydramalist.com/qoq5Kt.jpg)
![](https://i.mydramalist.com/bwZ6wt.jpg)
Both have virtual technology that you need to see via glasses/contacts. The plot of the drama revolves around the product undergoing a trial by the main character. Then without the creator’s consent, the product is released to the public (however not in the way the creator intended).