*English is not my first language* [FINISHED] An ancient greek mythology says that human were originally brought to earth having four legs, four arms, two heads, two hearts and one soul. Zeus, seeing their power, decided to split the human into two individuals, cursed to search for their other half for all their lives. Luckily, mankind developed a simple way to recognize one's soulmate. Once their other half is near, one's souls will glow brightly in the same colour, shining through one's chest so that they will recognize each other the moment they meet. Do Kyungsoo has lived a decent life for 24 years. That is until he accompanies his friend Jongdae to a concert, and the singer's soul decides to cry for its other half right there on stage, while Kyungsoo's soul answers in the same colour.