Many years ago, Michikatsu and Yoriichi's parents divorced. The mother kept Yoriichi with her, and the father took Michikatsu. Their relationship as a family began to crumble even before Michikatsu's birth, and for a reason that he doesn't even know years later. The two brothers are quite young and are very close to one another, but it seems life doesn't want them to stay together due to circumstances they can't control. For Yoriichi... This was unacceptable. He was beyond displeased. Meanwhile, despite the sadness for being apart from his older brother, Michikatsu couldn't help but feel... glad. Like the invisible chains of restrictions had finally been broken. As if Michikatsu was a prisoner of a cage that is now unlocked. But then... they have reunited once again.