Why Do Only Obsessive Male Leads Fall for the Busy Princess?!

"That's because you're an Imperial Princess, Riena. The Emperor has always wanted a son." The Emperor erased Riena from the Imperial Palace simply because his heir was a princess. He wanted to make the son born to his mistress the new heir instead. However, in the end, it was the Emperor himself who was erased from the world. "So what if you can't see? Riena, I'll protect you. All you have to do is become the Empress." The princess broke down when her fiancé, whose obsession had driven him to madness, placed the crown in her hands. "...Revenge was never what I wanted. I just wanted to be happy. Because being happy would have been the greatest revenge of all." Giving up on her hellish reality, Riena closed her eyes. And when she opened them again, she found herself back at the age of six. Having spent her entire life being forced to grow up as a kind and obedient princess, Riena made a firm decision. She would eliminate anyone who stood in her way and become the most powerful Empress the Empire had ever known. However, revenge and studying weren't the only things she had to worry about... Despite her already busy schedule, the Empire's most talented young men kept finding their way into her life. "I have absolutely no intention of seeing any other young lady." "What? Are you planning to become a priest or a sage in the future? At least say something that makes sense!" "If I truly have no other choice, then I intend to become a priest." And to make matters worse, every single one of them seemed to be hopelessly obsessive.