You Who Come from the Stars Fall in Love with "Me"

A story that has to be told between a professor who has lived for 400 years and a ghost who has lived for 400 years. "You are nothing more than a supernatural electromagnetic wave." "You're an alien." "You can't live like a human being." "You're an alien." "If you are found out, you will be scolded." "You will be dissected if found." "Let's continue talking about aliens." The story that the noisy ghost and the facially paralyzed ascetic professor had to tell. PS: Pitfall, enter with caution.