I am looking for the title of a manga. I only remember a particular situation. A boy because of some circumstances became the heir of some company or nobility, a castle full of maids. But first he can't handle the situation and runs away, to live alone again. But because of the maids he can't find a job (heavy influence). After some time the leader of the defense department came for him to have a talk and bring him back. And then the boy remembers that this girl lived next door a long time ago (because she was his bodyguard, and his first crush).
This is what i can remember only, not even the genre or is it hentai or not. Only this situation. Hope somebody can help me identify this manga.

Ageha no Otome

Thank you, that's it.