In his efforts to protect his adorably defenseless son, he often resorts to dirty tactics - such as feeding his friends snacks laced with laxatives. There is only one guy who just refuses to give up, and that's Riju's best friend, Shunsuke. Despite four years of trying to get rid of Shunsuke, the younger man continues to visit Chisato's home, and Chisato is starting to wonder whether he might actually be the "real" thing and not just as his son's genuine best friend.

    Number one, their coffee sucks. Number two, their customers never order off the menu. And number three, Yohan, the cafe manager, is deaf. So when Soohwa joins as a part-timer, though he is not expected to learn how to make good coffee, he is asked to expand his sign language vocabulary beyond the words, “higher,” “pay,” and “please.” But when Yohan offers to give him private lessons, Soohwa is reluctant. Not because he doesn’t want to study, but because he has a “hard” time around Yohan. Like, literally. He gets hard. Whenever he hears Yohan’s deep, sexy voice.