Guest is a hybrid dragon that had lived for hundreds of years and hid in the mountains. That's until royal knights discovered his whereabouts.

The knights shot Guest's weak point, but not enough for him to die before forcefully feeding him a sleeping potion.

When Guest woke up, he's in an unfamiliar room and scents. He's too weak because of the potion but someone had blindfolded him and tied his hands and legs. He could easily get out of this but he's too weak... The men that had tied him said that Guest had to impregnate two people, princes of the kingdom.