Kyoukai Senjou no Horizon - Volume 3C, Chapter 90: Mercenary of the Nostalgic Sky

Finding himself in an Last Airbender without an airbender around, a transmigrator waterbender goes on an adventure to stop the worst from happening to him.

“Let the world burn… if that’s what it takes to keep them from stealing what’s mine.”William Knox, once hailed as the brightest inventor of the century, dies with his heart corroded by betrayal. His daughter and closest friend stripped him of everything—his legacy, his empire, his future. But death wasn’t the end… it was only the beginning.He awakens in a strange world, ruled not by science, but by magic. His body is no longer his own. His soul is bound by a dark contract, and his mind is still tethered to his past—thanks to a newborn AI and the last working prototype of his neural implant.“Will you make a contract with me?”Guided by the cold logic of his most innocent creation and the limitless power of arcane forces, William must survive among arcane kingdoms, ancient beings, and buried secrets that defy reality.To succeed, he’ll need to master this new world’s magical laws, manipulate those who inhabit it, and uncover why he was brought here… and by whom.Vengeance forged his soul.Magic will shape his destiny.And the truth… will destroy the world.A story of magic, vengeance, and the birth of a new god of nightmares begins here...----------------------Warning:-------------------------------Explicit sex scenes starting from chapter 19, in any case this story is not focused on R18 it is just an explicit series.

The second prince has come of age. To celebrate the advent of such an occasion, the search for a suitable bride began. My younger sister was expected to go to the Royal Palace as a candidate. However, despite this, she eloped the day before her departure. I, the older sister she left behind, looked almost exactly like her – so much that we were often mistaken for twins…

One month, right? For just one month, shall I substitute in for my sister?

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.