I became the stepmother who caused my favorite character to fall into darkness

Akari, who possessed the body of her favorite character's stepmother. While she was delighted to see her beloved character in their adorable childhood up close, she realized that she herself is the stepmother 'Elena,' the person responsible for causing the character to fall into darkness. Determined to avoid the character's descent into darkness and make them happy, Akari faces numerous challenges as the misdeeds of Elena before the possession come back to haunt her. Will she be able to make her favorite character happy?