I have really grown to like this series and this was a good addition to the first 2 volumes. However, the teacher student relationship is starting to develop in a way that is sooo inappropriate and it makes me unsure if I want to read the following volumes.

Literally thought in the past volumes that the teacher was being a responsible adult by shutting down the girl's(forgot her name sorry)advances after finding out she was a minor. With this volume, it seems like he's now encouraging it, but in ways that won't get him in trouble, which is so disgusting and wrong. I was actually horrified when I got to that section toward the end because I thought this series wasn't going in that direction.

I still might read the 4th volume and hope that there's a difference with the way they tell that plotline. If it's worse, I will drop the series altogether.