We are indulging in pleasurable things. A certain day, an underground sex session involving multiple partners, including Tsukihime, Tsukino Aya, and Mitsuha Mako (MUKD-569).

These days, young people are all at an age with high sex drive! They connect with three cute yet erotic best friends on social media, partying until dark, engaging in wild, passionate orgys! Watching their friends climax, their hearts race while they feel shy, yet they happily join in the orgy → overly excited, splitting up in rooms for more intense sex → culminating in a chaotic, debauched state! Dear classmates, I'm sorry. Those girls who pretend to be innocent in class are actually doing these lewd things behind the scenes!