いつでも性交！？ アイドル学園！

Boys weren't allowed into the legendary school of allegedly all idols.
To see if it even existed, Kou Tennomiya went to that place and saw a string of beauties entering the fortress-like outer gate.
Including his own stepsister.

"The rumor was true......"

When Kou attempted to chat with some girls passing by they looked at him like a piece of garbage, and guardmen jerked him aside and laid him out. The girls went on merrily as if nothing happened.