Dekiai Ryuujin to Ikenie Hanayome

"If you offer a bride to the dragon god, the blessing rain will fall."
Tatsumi Waka was born in a village where such an old tradition still exists. He has golden "dragon eyes" and hair as beautiful as golden threads-- the marks of a bride. To gain the dragon's favor, he is forced to undergo a lewd "bride training," and the day finally comes when he must give herself to the dragon.
He is expected to be treated badly, but the dragon god tenderly embraces Waka...?

(Source: Kadokawa, translated)