Nakadashi Idol Gakuen ~Housou Kisei Lost Virgin Koukai Live~

The protagonist's father is the head of a major idol production company. He's been living a normal school life, but one day, his father orders him to begin training as his successor. As a new manager apprentice, the protagonist is assigned to manage the popular idol group [I Cherry]; its two top idols are also his childhood friends. However, contrary to the adorable duo who sing like angels on TV, both girls display naive and selfish personalities in real life. Mizuki used to be kind and gentle, but now harshly looks down upon all men. Ayano used to be friendly, energetic, and adorable, but now has a dark and calculating personality. At first, the protagonist is fed up with his father's orders, but his position changes completely as he comes to know about the girls' weaknesses. And so begins a cruel and merciless rape drama against the most popular idol duo...! [Translated from DLSite]