Aria, a former high school student, reincarnated as a young lady of an unremarkable noble house. She was roped into attending a marriage interview with Prince Eugene, who's rumored to be an oddball, and it’s during this meeting that he suddenly makes a ridiculous claim — that he was Oda Nobunaga in his past life!! *Well, that explains why the Prince still has yet to find a partner.* However, Aria calmly accepts Eugene’s tall tale, which inevitably piques his curiosity… *That won’t do! What if he finds out that I, too, have memories from my past life?!* Thus begins Aria’s days of being aggressively courted by the world’s most powerful prince who’s capable of unifying entire nations!