Once a Saint, Now a Child — Rescued by a Duke, Reborn as an AlchemistKusuri de Osanaku Natta Okage de Reikoku Koushaku-sama ni Hirowaremashita; 薬で幼くなったおかげで冷酷公爵様に拾われました; 薬で幼くなったおかげで冷酷公爵様に拾われました ‐捨てられ聖女は錬金術師に戻ります‐; Kusuri de Osanaku Natta Okage de Reikoku Koushaku-sama ni Hirowaremashita: Suterare Seijo wa Renkinjutsushi ni Modorimasu; Once a Saint, Now a Child: Rescued by a Duke, Reborn as an Alchemist

Cherise, who is the country's saint if only in name, is falsely accused of a conspiracy by her step-sister, Aria, and is exiled from her country. She flees for her lifeuntil, when faced with a life or death situation, she consumes the potion given to her by His Majesty, and to her surprise, her body changes into that of a young girl! She is then confronted by Diaz, who is rumored to be a "ruthless duke."