As a Succubus, I Can Only Suffer as a Good Brother.

(Marriage change 1v1, free of charge) In this world, human beings will transform into any race without warning and irregularity, such as cat people, dragon people, succubi, goblins, etc. The country calls it the mutation wave. In order to manage these alien races, the country established the Alien Race Management Bureau to manage the alien races. However, the alien races are divided into Ordinary aliens and evil aliens. Awakening evil aliens can easily change their temperament and endanger society, so once they are discovered, they will be captured. Our protagonist Lin Wanxing is a succubus who has awakened from the evil race. She cannot eat normal food and can only suffer as a good brother. After the mutation wave, in order to fight against alien races that were naturally stronger than humans, the country discovered source energy, conducted research on it, and opened its cultivation methods to the world. 1. Perception of environment | Perception of source energy, slightly strengthened physique | Threshold for ordinary people | 2. Energy storage realm | Source energy fills the meridians and can be released to protect the body | Low-level law enforcement officer | 3. Condensation Core Realm | Condensation of source energy core, qualitative change in combat power | Threshold for formal practitioners (basic requirements for establishment examination) | 4. Formation Realm | Source energy takes form, strengthens weapons, and moves at high speed for a short time | Backbone of each bureau | 5. Out-of-body realm | Source energy leaves the body, controls objects through space, and perceives spiritual consciousness | Being alone | 6. Fusion Realm | Source energy and weapons/spiritual objects merge into one | A strong person on one side | 7. Split Light Realm | Source energy clone, multi-line combat | Town-level combat power | 8. The Realm of Connecting to the Gods | The source of energy is like an arm and the fingers, humanoid natural disasters | One of the few in the country | 9. Breaking the Void Realm | A legendary realm involving the secrets of time and space | No one in the world has reached it |