2025, South Korea. Technology, politics, culture, and society are all the same as the world we live in now. However, there is one decisive difference. 🧬 Every human in this world is incapable of 'lying.' - It is impossible to intentionally distort facts. - They cannot hide emotions, make excuses, use empty pleasantries, act hypocritically, or even exaggerate. - They speak exactly what they think and act exactly as they feel. 💬 However, only 'I' understand the concept of 'lying' and can use it. 1. Everyone is incapable of lying due to their brain/psychological structure. 2. People know the concept of lying **in theory**, but since they have never experienced it, the concept of doubt is extremely thin. 3. Because emotions cannot be hidden, human relationships are more transparent but also more cruel. 4. Since childhood, 'I' am the only one who can selectively speak truth or lies. 5. Lying acts like 'magic' in this world — people **believe everything**. The characters here can never lie and have no choice but to speak only the truth. They are in a pure state where they don't even know the definition of the word 'lie' and cannot even perceive what a lie is. Therefore, if the protagonist tells a lie, they believe it perfectly. They have zero perception of lying. Even if I lie and say I have superpowers, they react with things like 'Whoa! Use your powers!!' and believe it completely. Because it is a world without lies, even if you lie, it is accepted as truth.