Side Character Transmigrations: The Final Boss is No Joke - Chapter 21

A 30-year-old NEET is reincarnated into the body of an otaku that choked to death on instant noodles. As he comes to grips with his new life, he realizes that this world is subtly different from Earth. The denizens of this world are far better looking, and this new world also possesses futuristic technology as well as mysterious Yin Yang masters!

A small immortal clan, with the efforts of the ancestors of the past dynasties, slowly developed into an immortal clan. This is the history of the development and growth of a small family. During this period, there were ups and downs, and there were also struggles for power and profit.

- Description from novelbuddy

He is the ruler of the mercenary realm, an overlord that gives headaches to the leaders of any country! For the sake of his friends, he’s willing to sacrifice himself; for the sake of his family, he does not hesitate to spill blood! He is a dragon, one that soars above even the highest of heavens. He’s a power that advances triumphantly through unstable situations, stirring up both the winds and the waters.

- Description from Novelupdates

After meeting an unfortunate death on earth, Sigrid unwillingly transmigrated into a novel world becoming Lady Sigrid Thorin the unwanted wife of the crown prince. She resigned herself to her fate and set a goal to become the empress.But to become the future empress, she had to gain the heart of her husband_the foul tempered Prince Roland Maximus a man that loathed her and would sooner kill her than kiss her.While his heart was too thin for her to squeeze into, it was rather wide for the woman he brought home on returning from a three month expedition, a woman he had sworn to protect forever. The same woman Sigrid was on a mission to destroy, an irreconcilable enemy.With misunderstandings, scheming and jealousy, thus begun Sigrid's trials to win the heart of the man that had undeniably captivated her with his dazzling smile and her mission step over the fake female lead, be crowned empress and change her fate.Excerpt.“A knife to the throat of your husband that has just returned from war, what do you hope to accomplish crown princess?”Sigrid's eyes trailed down, to the silver blade pressed against her abdomen, she raised her head and laughed snidely.“A knife to the belly of your wife as soon as you return from war, other men start by saying, honey i am home. They also don't bring home unwanted canaries as presents for their wives.”Roland leaned down with a part smug and part angry smoldering look in his eyes. It was if he wished to set her on fire, and not in the passionate way.“Honey i am home.” he slowly said, dragging the words out.Sigrid trailed the knife slowly over his neck, almost as if she was caressing it with her fingers. “Welcome back, i hope you don't mind but i intend to kill that canary. If you want to bring me a gift next time, try gold and diamonds. I can also accept you, just wrap a ribbon around your bare chest.”