I think the main difference between Sunja's life in Busan and Osaka is a comparison between community and individuality. In Busan, Sunja was cared for and connected to everyone around her. While she did have struggles and individuality, a lot of her life was based around a sense of community. Sunja was deeply connected and close to her mother and family, and I think a lot of that was the pinnacle of her happiness and security. Furthermore, Sunja was largely dependent on her family for happiness, connection, and security. In Osaka, Sunja no longer had her existing community and family to fall back on. She was on her own and had to establish her own path. She was cut off from everything she knew and the way of life that she had lived up until this point. She was essentially placed somewhere she knew nothing about, with people she didn't know, and a culture that was different than her own. In the beginning, this stark change was detrimental to Sunja—she was lonely, confused, an...