In this world, everyone's blood is made of soda. Red, orange, yellow, green, blue, blue and violet, seven levels. Purple is the last grade, and is called "the soda that has been opened for too long" - it makes no sound when poured out, and there is no sweetness after swallowing.
Ling Feng is purple. He grew up in the airless zone until he was fifteen, and spent three days condensing amethyst in exchange for a sip of soda every day.
Wei Beichen is blue and blue. The legitimate son of the Wei family, a color not found in the standard sequence, as blue as the midday sun pushed into the deep sea.
When they first met, Ling Feng huddled under an abandoned car. Wei Beichen jumped off the roof of the car and glanced down at him. The purple blood and blue light collided, igniting a ball of cyan.
Later, Ling Feng learned that the green grain was called "Echo". The meaning of reverberation is - once something starts, it is irreversible.
This is a story about color, class and how two people refuse to let go until the end.
Concept: BE, dual male protagonists, class confrontation, color system, sense of fate, growth, soda fantasy, strength, sadomasochism, fantasy, Machiavellianism