The first princess of the Humming Kingdom, Princess Miliaria Humming, was struck by lightning and momentarily lost consciousness. Upon regaining consciousness, she realizes that she has been living in a world similar to a female-oriented love simulation RPG game called “Concerto of the Light Princess.” Moreover, she has a confusing recollection of being the final boss villainess who torments the heroine. Faced with the prospect of inevitable destruction if she continues down this path, Princess Miliaria decides to concentrate on the love simulation aspect and improve herself as a woman. However, upon further reflection, as there seems to be a death flag present, she decides to fully immerse herself in the RPG aspect. This tale tells the misguided story of a princess who strives for ultimate power in order to eradicate the death flag in a love simulation game.