Review Detail of Rerian in Astral Prodigy: The Reincarnated Genius in the Shadows

I love these kinds of stories where people get reincarnated into books they didnt even read but their siblings or friends read. the writing is good i can actually imagine whats going on (smtn im rlly bad at) it reminds me of a webtoon where the ml gets reincarnated into his sisters novel but i forgot what it was called. good job!