Kokuryuu-sama no Minarai Hanayome

It is said that once every few hundred years, a dragon takes a bride and continues the bloodline. This is the story of such a dragon and a human. Money is more important than sex appeal! Aisha is working tirelessly to pay off her parents' debts. As she works hard today, she is suddenly loved at first sight by a handsome prince-like man ☆ He even tells her, "From today, you are the Dragon God's bride" --!? A contract marriage between a scheming dragon and a poor girl!? An oriental interspecies love story ♪

(Source: Rimacomi Plus, translated)