Domina no Do!

A man named Tsuchie Takeshi recalls a childhood friend named Hikari-chan, whom he remembers as gentle and kind. One day, while returning from school, he is taken against his will to a large house. There, he discovers that she has changed dramatically, becoming a harsh and domineering woman. She claims he once promised to marry her. Now, he must navigate life under her control as part of her influential family.