Suzune, a high school girl whose parents own a Japanese-style restaurant, "Fujikago," is in love with a college student, Arata, who works part-time at the restaurant. In place of her parents who are too busy to do so, Arata is the one who gives her a "welcome home." Before he gets too busy to see each other as he preps to graduate college, Suzune tries to think up a plan that will allow them to meet, however...?! Living under one roof, an age gap romance!