A former student of the protagonist’s father, a university professor, she is a private tutor who has come at the professor’s request to look after his son while he is away.
They live together for three weeks. She is a slender beauty and holds black belts in martial arts (karate, aikido, etc.).
Eager to impress the professor, she resolves to rigorously drill the protagonist during summer vacation to boost his grades.
Consequently, the unannounced visitor (Chinatsu) is nothing but a nuisance to her. Seeking to tear the two apart (?), she goes out of her way to interfere in various ways.
That said, she isn’t without her feminine side. In fact, she is currently caught up in an unrequited love affair...
[From
Getchu]