Savage Garden (manga)

It was a manga, I don't remember much. I don't know if it's good or bad, I'm just putting it here because there is a gender bender element.

Promotion

We are in 18th century England. In an orphanage, an orphan named Gabriel, a former nobleman, is friends with Jeremy, who grew up in the same orphanage and is rumored to be the illegitimate son of a nobleman. After an accident, Gabriel is forced to take the place of his friend Jeremy and start as Jeremy in a private school for noble boys only. This school, which seems like a paradise at first glance, will soon begin to show its wild side.