Song's Links
Song was always bickering with his older brother. Sometimes he used to think he was jealous that he couldn't be as free as him, but he never really realized that Axel did it because he cared for Song. He loves his older brother a lot, but constantly thought of him as an obstacle. Much like with Axel, it didn't settle in his stomach very well when they fought. He always tris to patch things up, in the end.
As an older brother, Axel sees his own son in Song a lot. He always disapproved of when Song ditched his duties to go out to the port and spend his time on the coastal lines, and would always drag him back. He was always fighting with his little brother about it, which left a sour taste in his mouth. However, they still love each other, and Axel will sometimes take his brother out for lunch or dinner. They still love each other; they just do what brothers do, and that's fight.