Private Teacher!

Schoolwork is so confusing for Rintarou that he needs a private tutor, but the maelstrom of emotions he feels when spending time with Kaede is weirdly unsettling. When Kaede decides to reward unsatisfactory progress with some unusual punishment, Rintarou figures out that what he is feeling is love - but what about Kaede? Does he love Rintarou, or is he just a perverted sadist?