I'm in Detective Conan, and the system has assigned me a succubus.

To be perfectly honest, Uesugi Toru was just an ordinary young man trying to live a quiet life. That all changed when a bizarre system latched onto him, insisting he was a succubus and enrolling him in a rigorous training program. Now, guided by an unseen interface, Toru must navigate the treacherous waters of his new reality, gradually transforming into a being of irresistible charm. With each new relationship he cultivates, he earns rewards, but the escalating complexity of his social life soon becomes a high-stakes game of its own. As Toru's circle of acquaintances deepens, a disturbing pattern begins to emerge: the people he is drawn to share an uncanny resemblance to one another. The walls of his carefully managed persona begin to crumble when his entanglements converge. Vermouth presses a gun to his forehead, demanding fidelity with a chilling whisper. Shiho Miyano follows, a red-and-white capsule in hand, claiming his most heartfelt promises. Even a formidable queen of law and a bewitching figure from a red magic lineage arrive to stake their claims, each brandishing their own evidence of his devotion. Trapped in a converging storm of jealous admirers, Toru must find a way to survive his own success.