My wife, Yui, is a pure and beautiful perfect wife. One day, a man named Isobe, who claimed to be her former homeroom teacher, came to our house. There was something off about him, so I sent him away early... A few days later, I found Isobe's smartphone wedged in the sofa cushion. I had cleaned there yesterday... So that means Isobe came to our house sometime between yesterday and today? What for? Feeling a bad premonition, I still couldn't help but peek into the contents of his phone...
