Kyoukai Senjou no Horizon - Volume 1B, Chapter 38: Musashi’s Mr. Impossible

The pain from the gunshot was nothing compared to the pain she felt in her heart as she realized she would be losing not only her life but also her unborn baby. With eyes that beheld great resentment, she looked at the man, the father of the child and her cousin's arms in arms.“Why?” There was nothing else to say. Eyes conveyed everything that was needed to be said,She didn't deserve such an end.He knew this.But the man had an impassive look. As if years of their time spent together meant nothing to him. Years of her showing him with affection meant nothing to him.Just one world“Fate”...As she opened her eyes, she found herself the very night this tragedy started. The day she got married to David.The face was the same, the reception was the same, and the room was the same. But the soul was not the naive inexperienced stay-at-home wife. But a betrayed woman who burnt in the flame of vengeance.

I finally managed to kill the demon lord.

The story is about a man who’s opposed to the now-common practice of implanting false memories, but is one day given memories of a fictional childhood friend. This fabricated happiness torments him, but then, to his surprise, he meets her – a girl who shouldn’t exist.