Itsuki Ringo (yes, her name means 'apple') is the top student of her freshman class with one talent: studying. Coerced by her mother into tutoring the abrasive upperclassman, Tsurugi Budou (who happens to be the brother of her crush, Tsurugi Minori), Ringo unwittingly finds herself butting heads with the rebellious Budou more often than getting any actual tutoring done. In an attempt to find out why Budou hates studying so much and skips tutoring, Ringo spies on him. She discovers a whole other facet to Budou's harsh character, and soon finds herself falling for him.