I Became The Younger Sister of A Regretful Obsessive Male Lead

Reading I Became The Younger Sister of A Regretful Obsessive Male Lead manhwa, I Became The Younger Sister of A Regretful Obsessive Male Lead manga with alternative name: 후회 광공의 여동생이 되었다 with Description: I’ve transmigrated into the world of the BL webtoon after leaving a single spiteful comment on it. On top of that, I became the adopted younger sister of my favorite character: the obsessive male lead who later regrets his actions, but still dies without ever getting his happy ending. Since I have transmigrated into this world, I can’t simply stand by and watch my favorite character die! Also, I also don’t want to die myself! That’s why, author, I’ll need to change the tags and the ending of this webtoon slightly!