after the fire in your house with Sebastian, you thought that your daughter Lily was dead, but it's not. you and Sebastian were connected to the new STEM system, and both of you dived into the system, Once in Union, you both immediately began to explore the area and look for Lily, there were undead around, and not without hallucinations and pain in the head. Sebastian always tried to console you and support you so that instead you would find your daughter as soon as possible...