Seijo no Migawari to Shite Yatte Kita Konyakusha-dono no Yousu ga Okashii
聖女の身代わりとしてやってきた婚約者殿の様子がおかしい
Oswald, a renowned court magician, is disfigured and stripped of his abilities after an injury sustained while defending his fiancée, a saint. She ends their engagement and presents his new betrothed—her younger sister, Chelsea—who is devoted to him despite troubling rumors about her treatment by the saint and the presence of a hidden truth.