"My older sister casually said, 'Watching porn doesn't excite me,' but then, while I was showering, she pretended to have made a mistake and rushed into the bathroom." VOL.1 DISM-018

To set a good example for her younger brother, the older sister casually remarked, "I don't get excited watching porn..." However, as the atmosphere grew increasingly awkward, she finally couldn't resist rushing into the bathroom and directly approaching her brother's penis...