As someone whose never seen the first season of Hero, season 2 is a pleasant surprise that shows why the Japanese continue to be good with workplace/investigational dramas.
Hero 2 is an easy watch even if you haven't seen the first season. And while the show has its smaller cases at fist, the overarching case still gets movement and development.
And while the writing is good, it's really the editing and acting that bring it all together. The group of prosecutors and their assistants get along well with great comedic timing and each character infused with their own personalities. And while a large chunk of the show at the beginning are interviews, the editing cuts quickly between all the prosecutors, keeping moments from stretching too long and becoming boring, as comedy intersperses with serious moments.
A fun watch, a recommend for any fan of the Japanese procedural dramas.