Lisa
Lisa is Kana's sister. She harbored deep resentment toward Harada over her sister's death—Kana had taken her own life, and Lisa blamed him entirely. To get close enough to make him pay, she dated Harada under false pretenses, using the relationship as cover for her real plan. Eventually, she murdered him by planting a bomb in his room while he slept, finally carrying out the revenge she'd been building toward all along.
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