MTL - The Last Apostle - Chapter 14 Crystal civilization?

It is an ultimate goal and dream for every man to be fully in charge of the power while lying drunk beside a beauty’s knees.

There was an ordinary man who had originally led a calm and average life. His life should have been mediocre throughout. However, one day he got a queer stone from an old swindler. Surprisingly, with the help of the stone, he actually possessed the ability to see through things. His whole life was turned upside down overnight. The door to a brand new world was open to him. In the end, having numerous beauties surrounding him, he got caught up in a relationship vortex, a grand scene of fighting over power: Starting from being a mediocre and nameless nobody, he overcame all the difficulties on the way and raked in the power, the beauty, and the wealth all in the end. Let’s have a look at how he had the whole city in the palm of his hand, how he lived a glorious life, and how he made himself a legend with just one simple stone.

Xueyue's life was filled with nothing but unfortunate events. Her mother died giving birth to her, her father abandoned her for another family, her stepsister stole her beloved, and she was framed for a murder she didn't commit.
Sentenced to death by beating, Xueyue thought her horrible life would finally end.

Riku Barusak is a hard-working child. Despite possessing an innate superior physical strength and having withstood harsh training she fails to unlock her talent as a spiritualist. The failure results in her being thrown away by her family.

Abandoned, the only ones that extended a hand to her were the demons, the greatest enemies of the human race. Serving under them as a soldier she becomes a weapon of human slaughter, a fiend that should never have existed.