Double player

[Original Novel](https://ridibooks.com/books/1483013524) **Original Webtoon:** [Ridibooks](https://ridibooks.com/books/1483030112), [Bomtoon](https://www.bomtoon.com/detail/double_player), [Lezhin](https://www.lezhin.com/ko/comic/double_player), [MrBlue](https://www.mrblue.com/webtoon/wt_000071098)