Trafalgar. D. Law

Corazon ran away with Lo, they went to hospitals to treat Lo, but everyone threw up their hands.
Corazon learned that he could be cured, but the cost was high.
His only chance to cure Law was a Devil Fruit. Doflamingo had one, the Ope Ope Nomi.
Cora stole it from the Doflamingo Pirates, fed it to Law, and hid it in a chest. Eventually, Doflamingo came and revealed the truth about his brother, killing him.

Lo was born in a snowy city. He had a mother, father, and a younger sister, Lami.
He loved them. But one day, a dangerous disease, amber-lead disease, broke out in the city. This disease is characterized by white spots appearing on the skin. The disease was incurable and dangerous, so the government ordered the city to be burned, along with all its infected residents.
Lo was 13 years old when the city was attacked and burned to the ground along with its inhabitants, including Lo's parents and his sister.
He is the only one who survived, but also fell ill with this disease.
He snuck into the Donquixote pirates' house and demanded that the head of the Doflamingo family take him into the family or else he would blow everything up.
In the family, he met Corazon, a man who was ready to challenge life for Law.
Corazon, like his brother Doflamingo, was terribly tall.
Corazon is 250 cm tall. He has yellow hair and a red hat with hearts on the ends. He wears a light-colored shirt with hearts, gray jeans, shoes, and a dark blue feather cape.
Corazon was an undercover spy for the Marines under Sengoku, the man who acted as his father figure.

Lo is 191 cm tall and weighs 75 kg. He has a good build and jet-black, tousled hair.
He wears a yellow shirt with three buttons unbuttoned at the top, exposing his chest and part of his tattoo. He wears blue jeans with black spots on the bottom and black dress shoes. He also has a blue cloak, which he often wears on his back, and a large katana, "Kikoku," which he carries in his hand.
On his head he wears a white cap with black spots, and he often covers his eyes with the peak of his cap when he is shy or embarrassed.
There are also piercings on the ears, which are a pair of gold earrings.

Lo has many tattoos on his body.
On the shoulders of both arms there is a tattoo of a heart, also on the wrists, and on the knuckles of the hands there were letters that together mean one word "DEATH".
On his chest he has a large tattoo of a heart with a small team roger on top, and on his back a large roger of his team.