Tough hero in casual setting has always been a favorite premise of mine, and this is a near perfect execution of that concept. A mostly solemn, sometimes goofy, but undeniably awesome protagonists propels this show through past-paced action, charming slice of life scenes, and tense yakuza politics. All of it's wrapped up into a neat and satisfying plot which is simple but never boring. And, while acting occasionally suffers due to classic Japanese exaggeration, it isn't enough to subtract from tight, sometimes even beautiful dialogue. The screenplay manages to deepen the background of the characters without becoming too preachy or exposition heavy. The production, sound design, OST, cinematography, and special effects are at a level where they fade into the background, elevating immersion and suspension of disbelief. The action is honestly quite incredible, and supports the premise of the movie very well. They also managed to strike the perfect balance between characters of varying personalities, and between moods of solemnity and levity. I strongly recommend this movie.