In the frozen stillness of Kyoto, Tsukishiro Amane was the perfect doll—a silent, obedient Omega crafted by centuries of tradition. But when she flees to the sweltering streets of Bangkok for a university exchange, her carefully constructed world begins to melt. Under the relentless tropical sun, the Japanese suppressants she once relied on fail her, leaving her defenseless against a primal storm she was never trained to endure.