Synopsis: Apollo's Heart

The book R15 was first published, and later an even more graphic version called R19 was released after it completed its serialization online. Despite adhering to Kakao's guidelines that forbid explicit content for webtoons, the webtoon R19 is rated equivalent to a western R17. Nonetheless, the creator of the adaptation verified that the webtoon version, including the R19 version, will primarily stay loyal to the original book's R15 version.