From 5 to 9

Sakuraba Junko is turning 27 years old soon, but even so, she is without a boyfriend. But who cares?! Junko has a stable job as an English teacher and she is fine with spending her upcoming birthday alone. Well, until she is set up with on an omiai with a Buddhist monk… which, of course, she rejects. But then he shows up at her school where he has enrolled in private lessons… what will become of our Junko-sensei?