My Dress-Up Darling is like 10% ecchi and 90% high-concentration feel-good juice consisting of two likeable nerds thriving in a healthy, trusting and supportive dynamic with a lot of good communication, engagement in each other's interests, and smiling.
It's pure serotonin.
"Sir Aristede Anthony Gaylord Florentia Von Durinbold De Beaumont I" may be a man of noble blood, but if you ask, he'll insist his name is Jonathan Doe, and that he is most definitely a fellow commoner just like you or I.