"The Black-bellied Prince's Heart Attack" was an ancient romance novel. The male protagonist was a scumbag who desperately doted on the female protagonist after his rebirth. Watch how our prince started his long road of courting his wife, and watch how black-bellied and shameless he was to capture the princess's heart. I think this book meets your needs, so I recommend it to you! I hope you like my recommendation, Mwah ~π