She Got The Pleasure Of Being Deep Throat Fucked, And Was Being Given A Hard-on Behind My Back. Yui Tenma

Toshio's girlfriend Yui visits Toshio's house. Toshio's older brother Hikaru meets Yui and sees through her as a complete masochist. Hikaru, plotting to train Yui, stares at her and treats her kindly. One day, when Toshio is not around, Yui comes to pick up something she forgot and accepts tea from Hikaru, spilling it on his crotch.