Exiled Rebels Scanlations:
It was also raining the day I met Yamato Bidou.
Yukio, son of the second-in-command of the Bidou Yakuza group, learns from the boss's son, Yamato, that the boss doesn't have long to live. "I don't want your father's... I want to exchange sakazuki with you, Yamato." In the face of Yamato's determination to take on the group despite only being a high school student, Yukio falls for him, and they unofficially exchange sakazuki. The two of them are certain that this bond will last a lifetime, but...

Note: A page for「Aka to Kuro」already exists here on Bato; however, the upload is incomplete, and the chapters are ordered wrong. I've found the full scanlation and decided to create a new upload page to ensure everything was ordered and credited properly, including providing links to purchase the official Japanese version and connect with the scan groups who kindly brought this all to us.