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The struggle between the direct line and the collateral line hidden under the tranquility has never stopped. As the hope of the Yan family, Yan Jiuqi is burdened with the mission of victory for the direct line. She thought she would fight alone for the rest of her life. Unexpectedly, a person appeared in her life and became her dawn...

Young boys and girls work together to solve a serial murder case. Unexpectedly, a shocking secret is revealed behind the scenes! (There are also emotional lines, sweet pet type, male and female protagonists are both physically and mentally clean 1v1)