True Sky Blue: A middle-aged man and an elderly woman are standing in front of a large mansion. The man's name is Hiro and he is an office worker who lives with his elderly mother. Then, a truck arrives with the painter Rin in it. Hiro and Rin end up sleeping together. With his first solo exhibition approaching, Rin plans to complete his new work at Hiro's house. But one day Rin's art dealer asks whether he would like to go to New York to study if this solo exhibition becomes successful. He has an important decision to make.