Koshiro's abundant exuberance and flamboyant approach fail to attract a girlfriend or even a date. Adding insult to injury, the endearing ladies who overlook him all gravitate towards aloof Kirihara, who effortlessly sails through life, unperturbed. Kirihara seems to take satisfaction solely in witnessing Koshiro's shortcomings. Is it a mere coincidence that these contrasting personalities are constantly thrown together, or is there a deeper reason for it?