31st December 1990, Ghost Zone, Aragon's Kingdom, Throne Hall.

The blue dragon, was sitting in the middle of the room, panting heavily. The taller black dragon, with red eyes, was sitting, and guarding it. The blue dragon was crying in a very high voice tone, which meant it was female.

"Shhh… Shhh…" the black dragon nuzzled her. "It's gonna be okay, Dora..."

The blue dragoness, looked at her older brother, with tears in her eyes.

"T-that r-really h-hurts" she whispered. "I c-can n-not s-stand it a-anymore…"
"You must bear it sis" Aragon smiled. "For our child"

Dorathea gritted her teeth, feeling how her body rebelled against her.

Although Aragon was abusing his sister in the past, he felt bad seeing her in this condition. Correction, he felt terrible seeing his sister in that state.

"Good girl" he tried to hug her, but pain in her voice stopped it.

This time the pain was unbearable.

Dorathea screamed as if she were being torn to shreds, and from under her scaly tail, blood began to flow out.

"... Push … Push …" her older brother nervously said. "Our child is almost in the world… Don't you dare to give up now!"

Dora shouted louder, feeling the pain disappear with the creature that left her womb. The blue dragoness rested her head on the floor, while heavy long breaths.

Fortunately, Aragon caught the baby dragon with his claws.

The newborn baby dragon was black, and it had purple belly, like its father, even the muzzle was similar. The only differences were white "hair" and dark green eyes.

With his sharp teeth he cut the umbilical cord between his two loved ones. Then he looked between the newborn's legs..

"It's a boy" he whispered, before looking at his sister. "Dora! We have a son!"

The blue dragoness smiled with tired eyes.

"He's so beautiful…" she smirked "Like his father…"

Aragon blushed, and looked back smiling nervously.

"Please… You're making me look like an big black tomato" he giggled with uncontrolable blush.

The little ghost dragon just cried.

Seeing the father for the first time in the world, was a big trauma to him.

"I... think he needs his momma" Dora commented, seeing her son in that crying state.

Aragon sighed and put the baby dragon near his younger sister.

The baby black dragon stopped crying, and hid under his mother's belly.

The blue dragoness gently nuzzled her son, and raised her left hind leg.

Little dragon was eating, and decided not to pay attention to anyone.

Dorathea looked at Prince Aragon.

"How should we call him?" she raised her eyebrow.

The black dragon with red eyes tapped his dragon chin, walking around the room. after a few minutes of walking on his claws, he experienced a revelation.

"Danny" he smiled. "Daniel is an perfect name for his personality"
"Good" Dora giggled "Another "D" in our family"

They both looked at their son.

Danny was very transparent (like his parents, because he was a ghost) which gave him many opportunities.

"I will call give him a nickname "Phantom" " the black dragon smirked, before nuzzling his son.

BTW... Incest was legal in Medieval.