In this paper, we went over the characteristics of Morandungi, the vol.4, no.2 of Cheondungshinhwa and how Korea and Vietnam took to Morandungi. Also, we took a look at how Japan took Morandungi historically, as reference we looked over the significance of Otogibouko, the vol.3, no.3 of Botantourou. To start, if we take a look at the stages of how the two people fell in love, in the original text, the relationship of the couple began in the order of meeting each other to love, and they did not need any other reasons to make love, except to get rid of their loneliness and sexual desires. However, in Botantourou, the relationship began in the order of meeting each other, the exchanging of Waka, to love and they were used to transform it into a sensitive story, which reminded us of Utamonogatari in the Heian period. The extreme sexual description shown in the original text were also altered to a more moderate style. Furthermore, the later half of the original text, which takes up half of the story, namely the appearance of the mage and the motive of vanquishing monsters were deleted by Ryoui to change the story into a horror story based on a love story. But this was different from the intention of Ku'u, who wrote the original text into a monster vanquishing story. Similarly, it had a different aspect from how the story was understood in Korea and Vietnam. Furthermore, by examining Japan's historical take of Morandungi, with Botantourou, the theme of Morandungi changed from monster vanquishing to a love story based horror story. But, due to this rebirth of Morandungi and Botantourou, these books were welcomed and loved by the Japanese, and it paved the way for literatures that were influenced and followed by Morandungi to appear in various forms.