Prince, This Romance Is Destiny?

Synopsis

"I want to change myself in the wake of this broken heart!" Akane set out, by herself, on a trip overseas. There, in Maleneo, a southern paradise with a gorgeous sea and sky, she met Rajeel, a beautiful young man with blue eyes. After an eventual night of love shared between the two, all that was left behind was a ring and his name. It seemed like an overnight love was just going to pass by like a brief storm, but fate allowed the two of them to meet again in Japan! To her surprise, Rajeel is the 4th in line to the throne of Maleneo...in other words, he's a real life prince?! Follow along for this fateful modern royal romance of a high-spec prince and victorious female college student! (Source: Kodansha, translated)

Anime adaptations