As Sukuna in Invincible - Chapter 10: Acceleration

Lin Jiufeng transmigrates to become the Yuhua God Dynasty’s Crown Prince but is dethroned, banished to the Cold Palace, and imprisoned there because he had released the holy maiden of their rival country.Lin Jiufeng isn’t dejected. He has brought a sign-in system with him when he transmigrated and he would receive rewards when he signs in at different places.Before the Cold Palace’s gates, he signs in and receives the Ultimate Heaven Slashing Sword Skill!In the Great Council Hall, he signs in and receives the Heaven Patching Technique!In the Empress Dowager’s palace, he signs in and receives the God of War Totem!…Liu Jiufeng imagines that he can quietly sign in like this until he becomes invincible. Yet who would have imagined that the Heavenly Concubine whom he secretly released would rise in rebellion and seize power after she returns to her country?After she succeeds, her first priority is to attack the Yuhua God Dynasty to rescue Lin Jiufeng.When Liu Jiufeng hears of this news, he’s puzzled. “Do I need you to rescue me?”

In her past life, Shen Xi always longed for love and validation from her parents, members of the wealthy Su family. Unfortunately, the attention that she yearned for was stolen by the family’s fake heiress – her elder sister, Su Ruowan.

My name is Joo In-gong. The name that my parents gave me meant ‘protagonist’ of the world. Really?

A skilled but unfortunate modern-day assassin was killed in a freak accident. However, he soon found himself summoned to another world by an evil wizard, who had him possess the body of a boy as an experiment. After successfully planning the evil wizard’s downfall, he used the wizard’s body as a springboard to gain influence and power in his new world.

- Description from Novelupdates