The killer "K" wanted to quit the organization because he was tired of the life of licking blood from the knife edge, but was silenced by the organization. The person sent by the organization to kill K was the person K trusted most, "Zero". Zero's action without hesitation made K disappointed with the world. He was devastated when he was killed but was unexpectedly reborn as a little doll. K looked up to the sky and sighed, "It's okay to be a little baby, why is the kid next door always pestering me!" As he grew older, K sighed more and more, "Why are there more and more kiddos around me?" "Why are EXO's kids not what I knew in my previous life?"
Concept: sweet love