She had been suffering from dementia since she was a child. Once she regained her consciousness, she thought she could live her life without any worries, but suddenly she heard that she had a fiancé whom she had been engaged to since childhood. This fiancé turned out to be her childhood sweetheart? Why doesn't she remember~
So, under the coercion and inducement of a certain shady man, he began a journey to find his memory.