[Machine Translation] Gentosha Comics' popular Links Romance series "This Sinful Night" is now available on Drama CD! The drama is a compilation of the first volume of the popular series! The Seikanji family is an old family that is falling into ruin. Kunitaka, the eldest son of the Seikanji family, is reunited with his childhood friend Ryoichiro, the son of a servant. A small misunderstanding had kept them apart, but Kunitaka finds comfort in Ryoichiro's cramped life and is drawn to him. However, Ryoichiro has a serious, life-threatening secret. When Kunitaka discovers this, she tries to save him by offering her own body... Ryoichiro, the son of a servant, and Kunitaka, a sergeant... A master-servant love romance, drowned in an unforgivable love. Luxury booklet with a short novel newly written by Katsura Izumi.