You cannot give what you do not have.   Kyungsoo gave everything to Jongin. Jongin took and took everything until Kyungsoo had nothing left to give. Kyungsoo loves him, but Jongin used him.   He wants to move on, but Jongin wants him back.

Kyungsoo made a pact with Satan. In return for his eternal life, he sold his soul to him which we all know to be inhumanly possible to ever happen at all. And yes, this means it’s all just an exaggeration of things, but let’s just cut the story short. Let’ start by saying it all begun with a deal. A deal with a devil named Kai.

(Authors Note: This is the " The Deal " Unedited Oneshot Version, I have an edited official one, do check it out. Thank you. )   Kyungsoo made a pact with satan. In return for his eternal life, he sold his soul to him, which we all know that it is inhumanly possible to ever happen at all. And yes, this means it’s all just an exaggeration of things, but let’s just cut the story short. Let’ start by saying it all begun with a deal. A deal with the devil named Kai.