19화: 미유가 외계인 방문자가 부모님의 옛 집을 청소하는 것을 발견하다

19

Miyu gets a letter from her parents telling her to visit their old home. More people came than expected. When they got to the home, they realized that the house was cleaner than when Miyu and her parents were living in it. She thinks someone is in the house. They find out that it's an alien named Souji from planet Osouji was cleaning up their home. (Source: Wikipedia)