Emotion Nation

Initially just trying to survive at the bottom and protect the remaining family or friends. After accidentally exposing his immunity, he is hunted by the government, the black market, and resistance organizations, and is forced into the vortex. As the truth unfolds, he discovers that his immune constitution is not accidental but closely related to the 'Source of Emotions'. He must choose: to destroy the entire emotional system, returning humanity to a free but chaotic emotional world; or to find a third path, so that emotions are no longer enslaved. — Description from novelcodex.org