Hanaukyou Maid-tai OVA

Taro's unusual life inside the Hanaukyo mansion opens onto three new problems. He learns more about Cynthia and the brilliant alternate personality known as Grace, undergoes exhausting combat training under his bodyguard Konoe, and finally falls victim to Ikuyo's latest scheme when she tricks him into spending an entire day disguised as one of the maids. For Taro, even learning more about the people around him somehow comes with humiliation.