Oishii Study (Delicious Study)

Itsuki Ringo is a genius 10th grade girl. Her mother sets her up with a job of tutoring Tsurugi Budou, younger brother of Minori, the most popular guy in her school. Due to a misunderstanding she thinks her student will be an 8th grader studying for high school entrance exams but instead he turns out to be and 11th grader who has absolutely no desire to be tutored.