Laughing Target (1987)

Things couldn't have seemed better for Yuzuru, your average high-schooler. The captain of the school archery team, he's going steady with Satomi, his teammate. He had almost forgotten that he had been betrothed to his backwater cousin, Azusa, when he was only 6, but all this changes when his aunt dies a peculiar and unnatural death. Now, arriving to claim what she feels is rightfully hers, only Satomi stands in Azusa's way... and with the mysterious and frightening powers that Azusa brings, Satomi won't stand in her way for long!