Manga Please Be Obsessed With Me

Arabella is a forgotten Empress who vomits blood whenever she moves. After being killed during the rebellion against the oppression of the Imperial Family, she returns to the time before her 20th birthday. Realizing that she must survive until her 25th birthday in order to stop the regression cycle, Arabella decides to look for a way to cure her illness, even if it meant seeking answers from the rebel forces themselves.