Domina no Do!

As a child, Takeshi dreamed of playing with Hikari and remembered her as a loving and gentle girl. However, one day, he is abducted on his way home from school and taken to a grand estate only to discover that Hikari has transformed into a tyrannical and aggressive dominatrix. To make matters worse, she claims that they made a marriage pledge! How will Takeshi adapt to her new demeanor and his new role as a member of her distinguished family?