Years after the dissolution of the Tojo Clan and Omi Alliance, Rina has built a life far removed from the criminal world her father once belonged to. Working as a nurse, she becomes responsible for caring for Kazuma Kiryu during his cancer treatment. What begins as a professional relationship soon becomes deeply personal, as Rina goes above and beyond to make sure the stubborn former yakuza actually rests, eats and follows his treatment. Rina knows Kiryu has lived an unusual life, but she doesn't initially understand just how important he once was. Kiryu, however, recognizes Rina's family name immediately. Years ago, he knew her father through the Tojo Clan, and there are parts of that history he would rather Rina never discover. When events surrounding Goro Majima's disappearance and Hawaii begin drawing former yakuza back together, Rina finds herself caught in the remnants of a world she thought had died with the Tojo Clan. With Kiryu reluctant to reveal the truth and Takayuki Yagami investigating the secrets her father left behind, Rina must uncover what really happened in her family's past while protecting a man who has spent his entire life protecting everyone else.