Death Game Manga no Kuromaku Satsujinki no Imouto ni Tensei shite Shippai shita

One day, Mai remembers that her perfect stepbrother is a character in a death game manga, and that one year later he will hold a death game involving all of his classmates, killing his sister in the process. Mai plans a variety of surprises for her stepbrother every day based on what he said in the manga, "Nothing unexpected happened, so I was bored," but as the days go by, he begins to show abnormal signs... Only I know what my brother's really like. Pepu's comicalization of Inada Sou's popular web novel!

The villainess, Mystia, remembered her past life on her 10th birthday and has unwittingly turned the characters in the otome game "Kyun Kyun Love School" into yanderes! In order to avoid becoming the love rival of the "heroine" who will lead her to her downfall, she starts making every effort to break off her engagement with her "prince-like classmate!" That's was what supposed to happen... But, because of her kind personality, her favorability increased instead! She also resolved the traumas of the "self-indulgent noble" and the "innocent yakuza teacher" causing them to hold warped affection for her. Furthermore, there was an exclusive maid she didn't remember seeing in the game... With all these abnormalities, can she change her situation by the time the heroine enters school? An unstoppable and heart-thumping number of complicated misunderstandings! A suspenseful school romantic comedy that will paint you a picture of Hell!Mistia Erlaine is the daughter of a noble family who just started at high school. She's surrounded by a group of adoring classmates and her charming fiancé. Everything seems perfect. Except that this world is actually a dating sim called "Kyun Love", and she's destined to become the main character's evil rival! Mistia is determined to do everything she can to avoid her fate but it’s not as easy as it sounds. Especially when all the boys keep falling in love with her!