I Leave You Because I Love You Manga
愛しているから永遠のさよならを / Aishiteirukara Eien no Sayonara o

On the morning of her wedding, a woman discovers she is a witch condemned to be burned at the stake—and that her whole family will face the same fate. So when Oscar, her former fiancé and the father of her child, asks them to become a family, she cannot accept his words with joy. She disappears from the man she loves to protect him and their family from the kingdom’s law. Alone, she raises their son, Noah, amid cruelty and loss, gradually finding the strength to live as a mother rather than as a cursed woman. Oscar takes another path, fighting tirelessly on his own to protect the future he still hopes to share with her. He is prepared to safeguard her life, even if it means saying goodbye forever.