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Darkness of the Sea, Shadow of the Moon

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海の闇、月の影

Lumi and Luka Kobayakawa are identical twins who share everything, including their affection for the handsome upperclassman Katsuyuki Tohma. When Katsuyuki chooses Luka, a rift forms between the sisters, leaving Lumi feeling deeply betrayed. During a storm, the track team takes shelter in a cave, which is revealed to be a mass grave. A strange odor kills everyone except the twins, leaving them as the sole survivors.

In the aftermath of the tragedy, Lumi undergoes a drastic personality change, becoming possessive and hostile. The traumatic event also awakens terrifying psychic abilities within both sisters. Now, with her newfound powers and twisted desires, Lumi is determined to claim Katsuyuki for herself, and she will let nothing—not even her own twin sister—stand in her way.

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