La reencarnación del yakuza, 1

Ryûmatsu is an old-fashioned yakuza in his fifties... and what a reputation he spends in the city's underworld! However, everything changes when he falls into the trap of some young thugs who ambush him. In the course of the fight and at death's door, Ryûmatsu falls into the river and remains unconscious. When he awakens, he discovers that he is in the body of Ryû, the delicate princess of the kingdom of Lundberg, in what resembles a fantasy world straight out of a fairy tale. Now she is a young girl, she is full of energy and must get used to the palace etiquette, although it seems that a mysterious order wants to end her life at all costs, because, as an ancient prophecy dictates, only the person who carries the symbol of the Goddess of Protection on his back will be able to save the kingdom from an imminent catastrophe. Ryû may now have the delicate body of a princess, but inside her is the fervent soul of a yakuza. The time has come for this magical world to taste its fists!