Here we have a Robin Hood style genius swindler who finds himself assuming the identity of a high school teacher while he is on the run from the law. He then in turn finds himself using his talent and skill to teach his students valuable life lessons whenever they happen to get themselves in trouble outside of class. This he refers to as Hammer Session.
Not to be missed. Never boring and one of the most fun to watch dramas ever. Super-short and sharp-tongued student Tachibana Kaede along with super-tall and stylin' Otowa#4 (aka Hachisuka-sensei) lead this into five-star territory.
Other amusing roles include the tandem of fellow fugitive Azabu#10 (aka Imamura Shouhei the school janitor) and the true Hachisuka-sensei, who is a maladjusted otaku he calls "Roku" as in the Japanese term "rokudenashi" which basically means "good-for-nothing loser".
Well, a Miss Universe contestant as the school health nurse. I'm alright with that.
In both the protagonist is a swindler who starts using his abilities to protect the people who got in trouble. kurosagi is about those people getting in troubles, because of money; in hammer session! the cases are different, but involve students from one particular school.