<span>23-year-old school teacher </span>Aoki Daisuke<span> has a huge problem. One of his precocious 3rd grade students, </span>Kokonoe Rin<span>, has the hots for him! Indeed, the mischievous Rin has proclaimed herself to be Daisuke-sensei's girlfriend and is now on the warpath to win him over or get him fired... whichever comes first! And that is not the end of Daisuke's problems, though; he also has to find out what happened to </span>Usa Mimi<span>, a friend of Rin's who has yet to attend school.</span>