Lies Are A Gentleman's Manners(2005)

Usotsuki wa Shinshi no Hajimari

Brash med student Jonathan has been stealing drugs from his school's hospital and selling them to his classmates! When a sly professor discovers his racket, Jonathan agrees to a physical relationship in exchange for keeping mum. But what happens when a simple business transaction turns into a heated almost-love affair?

Lies Are a Gentleman's Manners reveals the devilishly dirty secrets of the high-society set! With appearances to uphold and family legacies to honor, any "extracurricular" activity must be kept hush-hush. But can a man with a doting wife, a darling child, a spoiled lover and a sordid past truly get the balance right?

(Source: Juné)