What is oppai no ouja?

Oppai no Ouja is a Japanese adult visual novel developed by Studio Ego and released on August 24, 2007, for Windows. The game follows the story of a man named Yusuke Nakonishi, who is selected to be the director of a new adult video production company called Flower, which focuses on creating content featuring large breasts. The game features multiple routes and endings and offers players the ability to make decisions that affect the story's outcome. Oppai no Ouja also includes explicit sexual content and is classified as an eroge game. The success of the game led to the development of several sequels and spin-offs, including an anime adaptation titled Oppai no Ouja 48.