Jitsuroku Soap-jô Scandal: Saku!

A art teacher begins an affair with an old student of his that is working at a soapland(a type of brothel). Things get sticky, literally, when his other mistress and his wife finds out about it! Surprisingly, there is very little soapland action in it. It all leads to a downbeat, kick in the balls ending.

The Impulse dvd looks to be tape sourced, but isn't in that bad of shape. No optical fogging in this one either.