Kyoukai Senjou no Horizon - Volume 7C, Final Chapter: Me in a Place of Rest

A dancer who was killed by a serial murderer found himself occupying the body and taking on the life of Brian Morse, a patient with anti-social personality disorder. As Brian, he has the look, he has the brain, he has the charisma, but he also has something that somehow always attracts psychopaths…[The story mentions 3 reality shows and crossovers with the American drama series Dexter. SLASH]

- Description from Novelupdates

A weary historian dies and finds himself in a different world awakened in a life as the notorious young Duke of a southern state. His nation is weakened, his army underfed, and his neighbors revolve around his lands menacingly. No one believes his land is going to hold out until winter.But this newfound duke is no naive simpleton his enemies recollect. He carries with him the experience of centuries of war and empire, of starting and ending monarchies. From Caesar to Napoleon, from the Mongols to world wars, he has learned from each of them—and his strategy is to make history his very own arms.He organizes his smashed levies into well-trained formations, rebuilds his castles, and turns his villages into supply centers. Where others see defeat, he senses opportunity. As he triumphs, rumors spread: of a pennant red as winter snow that shall not go to ground, of a bloody duke who writes his name in gore and flame.Is he a savior who's constructing a new empire, or a tyrant who's going to bring the world to endless war?

Elena, who spent her entire life as a cold-blooded female knight to avenge her family, ended up dying without claiming her revenge. When she opened her eyes she found that she went back into the past. By day she was a lady in a dress, and at night she carried a sword to change history and prevent her family’s destruction.

【First angst, then sweetness (bittersweet struggle) + uncle and nephew rivalry + broken mirror reunited + strong take and win + mild coercion + breaking defenses for pursuit】Renee Winslow went to The Yates Family for the first time as the girlfriend of Jack Yates' nephew, Caleb Yates.Caleb Yates repeatedly warned: Third Uncle has a cold and ruthless personality and has injured his leg; he's very scary, so don't get close to him.Later, Renee Winslow was forced to enter the small building where Jack Yates was recovering.In the dim light, the man's face was darker than the sky, his long, bony fingers resting on the wheelchair, veins bulging on the back of his hand.That night he tightly held Renee Winslow's waist, kissed her fiercely as if he wanted to devour her, buried his face in her neck, and whispered hoarsely, “Break up with him, be with me.”Since then, they maintained a forbidden relationship unknown to others.After three years of entanglement, Renee Winslow used all her efforts to finally leave Jack Yates.Five years later, she returned to Northcity.Jack Yates buried his face in her neck again, his voice hoarse, “Renee Winslow, I let you go once before, but I can't let myself go. Will you come back?”