カテキョ!

Rintaro is a scatterbrained third-year high schooler who keeps failing his entrance exams, so his older brother hires him a private tutor: Kaede, a brilliant chemistry student who is very strict about his pupil's scores. Kaede enjoys teasing Rintaro and keeping him late for extra one-on-one lessons, and Rintaro finds his heart racing for reasons he cannot explain. As the study sessions go on he realizes he has fallen for his tutor, and frets over whether the feeling is returned.