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I don't remember a lot from it. All that it's the typical reincarnation into a game plot. But it's not a webtoon it's a classic manga. I do remember that the protagonist was worried she would be killed so she changed. She ended up meeting the male protagonist of the world and he was also a reincarnated person, who simply knew about the game because of his younger sister. She finds out later that the world's protagonist is also a reincarnated person but it's a young boy so he's kinda a pervert. Pls help me find it!