I think he noticed that Tsubame wasn't happy doing that job and only doing what his family said (and he was the firstborn, so all expectations were always on Tsubame.) So when Tsubame got that chance to escape and be himself with the man he loved, he decided to go. And I like to think that someday Tsubame will sort things out with his family (▰˘◡˘▰)
He still seems a bit selfish though ^^;
ahahah yeah, but the final decision was made by Tsubame, and I feel like this decision was the first Tsubame did for himself and not for the family business, so I forgive his selfishness ahahaha
But if that guy loved Tsubame why did he make Tsubame leave his job and his family so that they could be together, but he never even thought of the option of quitting HIS job to be able to stay with Tsubame? Idk seems kind of selfish. (╯°Д °)╯╧╧