Stuck in My Sister's Dating Sim

All I wanted to do was save my sister’s game, but how did I get dragged into it? I got transmigrated into my younger sister’s stupid dating simulation game! Jin-Su Lee has played this game before and knows enough about it… to realize he’s been transmigrated as a trouble-making, good-for-nothing villain who dies way too soon. His new plan is to lead a quiet life while he figures out a way back to his world. But somehow, this isn’t going the way he planned. Can Jin-Su find his way back from his sister’s dating simulation game? (Source: POCKET COMICS, edited) *Notes: \- Includes seven side story chapters rated R19. \- This was first published in English on POCKET COMICS (2023-01-24), but its first AniList-eligible publication was in Japanese by comico (2023-06-18), and its Korean release was not until 2023-11-10 on KakaoPage and Kakao Webtoon.*