In a rural town where our protagonist, Yoichi, has just started his new job alone, he stumbles upon his neighbor Luna, a voluptuous divorcee. One day, while spying on her masturbating through a hole in their shared wall, she catches him red-handed and teasingly asks if he was watching. This product is a condensed version of 'Tsumi no Runa', featuring a story about how Yoichi succumbed to Luna's insatiable sexual desires multiple times due to her expert cunnilingus techniques during his lonely stay at the countryside. Note that the recording contents may vary depending on the distribution method.