Castle of Black Iron - Chapter 8: Mental Arithmetic by Abacus

A story in which a woman, after learning that the world would end in ten days, sets out to finish one last thing: murder her ex-girlfriend.

However, she ends up befriending, and spending the world’s final days with, the little sister of her ex-girlfriend instead.

Lin Chuyi, after meticulously selecting for three years, chose a high-quality boyfriend, only to be cheated on a month into the relationship. She decisively broke up with him and immediately took the place of the Ye Family's daughter, marrying the heir of a wealthy family, Sheng Tingyuan.She planned to leave gracefully when the Ye Family's real daughter returned.Sheng Tingyuan blocked her path, “You lied to me and now you want to run away?”Lin Chuyi, “Don't you hate it the most when people lie to you? Should I not run and wait for you to deal with me?”Sheng Tingyuan pressed her into a corner, “You're not 'other people,' wife.”

Life in hell mode was never fun? Was it?***********Being burned alive in a laboratory out of sheer jealousy for he had created the best AI system in the medical world? Oh boy, Damien could assure you that it was not fun. But then again, you never get another chance to feel the slow burn—okay that went dark quickly.Lets take it from the top once again.Damien was sure he had angered someone up in the sky and given his foul mouth that hurled curses worse than a sailor he had very good idea of how it happened.Because if being abandoned in the orphanage was not bad enough, he was stabbed by the very mentor he trusted and followed with closed eyes.But when he found himself waking up in another world— even after death he was not left alone. SMH.The world of beastmen —— he realised that he never knew how difficult hell mode truly was.Surviving in the world of beasts was a challenge in itself.And for Damien who found himself in the body of the discarded crown prince of the Brystoria Empire—With a broken nucleus and mana suppressed by Tartarite nails and used as a weapon of humiliation, it was not a challenge.For Damien, survival in the beast world was like walking on a thin rope, that too on one foot!Fortunately, the AI system that Damien developed as a doctor before his death followed him to this world of beasts. Join Damien in his new quest as he overturns his destiny from being a slave to the king of beasts.