Fem Reader x Natsuki Subaru |Crimson Flames of Love|

After meeting an expected-to-happen sort of death, you were reborn as the younger twin sister of the future 10th Sword Saint of Astrea family, Reinhard van Astrea.

Upon realizing you were reincarnated into the world of your favorite series of all time, you begin to take advantage of your position.

Upon meeting a certain black-haired boy on a fateful day at the capital, you're deep lost loving obsession with him resurfaced, and you embark on a journey to protect him at all costs.