A Clean House is an original song featuring YOHIOloid that demonstrates what a disease could do to a person's mind. It tells the story of a man who is constantly haunted by his "colors". These "colors" create the strife in his heart and reflect in his home. He sees how his emotions have affected his home, and no matter how hard he tries to erase them by cleaning his house, they never go away. It's through the appearance of a new color, dark red, that he realizes his life may be coming to an end. He cleans his home for the last time and at that moment, he feels that he "can sleep peacefully".