Summary
Mesudachi narrates the tale of two childhood companions residing in a very sparsely populated region. Satsuki, a kind and rather unromant girl, has been in the company of the protagonist since her early years. Once, during her visit to him, she discovers multiple explicit periodicals in his possession. Subsequently, she desires to engage in the titillating behavior that she seen in the magazine, but, the protagonist endeavors to evade her. Once her modest femininity is crushed, she chooses to entice him by inciting him in the most deviant manners that even her friend would be unable to ignore, and ultimately they engage in sexual activity. Mesudachi EX resumes one month after the events occuring in Mesudachi. Childhood friends bonded and now have sex everywhere. On this occasion, they choose to engage in the activity in school, but, they were apprehended by the president of the student council, who refrained from intervening and instead waited till they would have completed their task and left. Upon the couple’s separation, the main character is immediately rendered unconscious by a stun pen. After a period of time, he regains consciousness shackled on the floor and is thereafter subjected to sexual assault by the president, who is in a yandere mood.