Castle Oblivion Ruins

Story
In Kingdom Hearts AF, King Mickey discovers a time machine in Castle Oblivion. His plan is for him and the gang going back in time to the castle's construction. Sora heads in first but an error causes him to head 1 year into the future. He learns that Leon and Co. are inside the castle and it is in ruins. Sora also uncovers that an explosion had destoryed everyone except for those who were at Disney Castle or escaped through a corridor of darkness