The protagonist Shen Zhinian is a scavenger who has had a special ability since he was twelve years old: he can see "emotional fragments" that are the embodiment of human emotions. Different emotions correspond to exclusive colors (sad grey-blue, happy gold, gentle milky white, heart-pounding light pink, desperate black, conspiracy dark red, etc.). They can be picked up and stored in their own spiritual space "Collection World", and stored in partitions according to emotions.
