Mercury, who is the first boarding house resident in "Solar System", is not feeling well at the moment. He feels awkward about himself being short, he also sometimes feels insecure about his small height even though he is a man. he also sometimes often stays alone when other residents mingle in the living room.

Sun, who has observed Mercury's aloof behavior, feels worried, he also knows about the problems that are happening to Mercury from Venus, Mercury's friend.

Sun then approaches Mercury who is standing looking at the moon on the balcony of the house alone

"The moon tonight is very beautiful, isn't it?" Sun say in his deep voice . Sun then leaned against the wall and smiled gently at Mercury.