Mayu has her distinct fanclub, and honestly who wouldnt when you can draw bishies with the world's deadliest eyes and sexual appetite with such style. So regardless of the watery thin plot of this story, which honestly resembles a bit of a porno, there will be plenty of takers for the artwork.
Kumiko is a naive, rich and very properly bred teacher-in-training who is trying to convince her father she has what it takes to become a full time teacher, so that he doesn't marry her off to the highest bidder. Enter Ryu, her last hope as a private tuition before she is forced to give
up, who's libido is so out of control he demands sympathy sex from Kumiko because she interrupted him and a girl right before he climaxed! Eek! However, they have a funny exchange now and then right before he attacks her and he eventually trains her enough to want him as well. Other humourous scenes include those at school, when he's going through a particularly dry period and leaving a dense trail of deprived pheromones wherever he walks. ("Don't go near him, you'll needlessly start to desire!") and when he takes Kumiko to a love hotel for the first time.
If you enjoy smut, as so many of us do, then yes, this may be worth your while, but just for romantic shoujo, this doesn't cut the mustard as little character development happens right before he seduces her.