The story takes place in a future interstellar era with highly developed technology. Human genes have mutated and differentiated into four genders: E, A, B, and O. Each gender has unique pheromones, which not only affect their personality and abilities, but also play a decisive role in social status and emotional relationships. In this world, family interests, social status and personal emotions are intertwined, forming a complex network of interpersonal relationships.
Concept: The story revolves around love, family interests, social pressure and self-identity, and explores how individuals pursue true love and self-worth under the arrangement of fate in a society of genetic determinism.