Once, a princess and a knight were deeply in love, but their separation was inevitable. Determined to meet again in their next lives, they made a pledge to love without limits. Unfortunately, fate was not on their side, and their reincarnations were born years apart. Now, the princess is a single 39-year-old woman residing in Japan; however, destiny has a surprise for her. While going about her day, she unexpectedly runs into her valiant knight, now reincarnated as a 17-year-old high school student who immediately recognizes her. Confused and unsure of how to proceed, the princess finds herself in a predicament as the young boy is unequivocal in his determination to rekindle their love from before.
