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Maaya Shinonome, affectionately called Maachi, is a 15-year-old high schooler with a big secret: she's head-over-heels for her older stepbrother, Riichi. Though they aren't related by blood, their parents' work has left them living together alone, making Maachi's feelings all the more complicated. Riichi is the school's golden boy—handsome, smart, and popular—but he hides a surprising side that only Maachi knows: he's a massive otaku. As Maachi navigates her unrequited crush and the chaos of teenage life, their bond deepens in unexpected ways.
