In Gintoki's Japan, the arrival of the various space races known collectively as the Amanto ended the era of the samurai. The Amanto's highly advanced technology resulted in total conquest and a severe economic shift. Now, former samurai such as Gintoki scrape together whatever livelihood they can. Gintoki's profession of choice is that of a yorozuya: he'll complete any job for money. However, he’s unmotivated; and spending most of the day on the couch with the latest issue of Jump and a carton of Strawberry Milk is his preferred pastime. It turns out that his new unpaid employees, Shinpachi and Kagura, are going to interfere with his pastime even more than with his "work"! Of course, none of this means he has really given up on his samurai ideologies!
Both of these shows are gag style comedies that mock the traditonal samurai values. They both love to use puns and wordplay to create a lot of their humor. Most people think of more serious themes when they think of feudal Japan so both these shows are kind of surprising in the light hearted approach they take to the topic. If the puns and word play in Gintama amuse you them you should definately check out Tono to Isso.
“Vash, the Stampede” - worth 60 billion dollars to the one who can turn him in. Bounty hunters everywhere are on the lookout for this legendary gunman, not to mention insurance agents Meryl Stryfe and Milly Thompson, who are tasked with preventing any potential damage that this Vash can cause. But with 60 billion on his head, Vash is not an easy man to find.
Trigun and Gintama are rather different kinds of anime. Whilst Gintama focuses on the humor aspect, Trigun is more mixed between humor drama and action. But the main reason I recommend watching Trigun if you liked gintama is beacuse the main characters are rather alike, in my oppinion. Both are lazy and goofy on the outside while they have a fierce tiger and a romantic personality inside.
Kazuto Tokino lives his tranquil life attending high school by day and running the family bath house by night; but his peace is all set to change. One fateful day, the Beautiful Princess Valkyrie crashes her spaceship into Kazuto’s public bath, killing the high-schooler outright! In order to revive him, Valkyrie gives the teen half of her soul, with the unfortunate side-effect of reverting the princess back to a child in both body and mind. Now the young Valkyrie is moving in to the bathhouse and, with her brash sister Hydra and over-protective catgirl maid Sanada following close behind, it seems Kazuto’s peaceful life is long behind him…
In both anime aliens live freely in Tokyo and peacefully coexist with humans. In addition, in both anime there is heavy dose of absurd comedy and madness
Rinko Sakuma thought she was working for a regular detective agency, but two months into her new job she learns that her employer, Akutabe, is actually a demon summoner who calls creatures from the depths of hell to carry out revenge for his clients. Rinko’s first experience of a demon comes in the form of Azazel, a devil whose power is to incite lust in return for an offering of food. Unfortunately, as if being harassed by the flirtatious demon isn’t enough, Rinko has been forced to into signing a contract with him for eternity! Now the innocent office worker must work with Azazel, the fecal gourmet Beelzebub and a whole host of equally deranged devils to complete jobs for the agency; though with the demons' habit of bungling tasks and making the situation worse, it won’t be easy...
Both Gintama and Azazel-san are frantically placed gag comedies. They both include parodies and have a lot of crude humor. Azazel-san's short episodes focus almost entirely on this crude type of humor but Gintama is a much larger show and have a broader sense of humor overall. If you find the crude humor in one appealing then you should enjoy both shows.