

Original Creator of Gintama, appears sometimes in the manga/anime as a lazy gorilla.

Life isn't easy in feudal Japan... especially since the aliens landed and conquered everything! Oh sure, the new health care is great, but the public ban on the use of swords has left a lot of defeated samurai with a difficult decision to make concerning their future career paths! This is especially true if, as in the case of Gintoki Sakata, they're not particularly inclined towards holding a day job, which is why Gintoki's opted for the freelance route, taking any job that's offered to him as long as the financial remuneration sounds right. Unfortunately, in a brave new world filled with stray bug-eyed monsters, upwardly mobile Yakuza and overly ambitious E.T. entrepreneurs, those jobs usually don't pay as well as they should for the pain, suffering and indignities endured! 
(Source: Sentai Filmworks)

Hideaki Sorachi is a Japanese manga artist best known for his work Gintama.

According to his reply to a manga reader (Gintama Volume 11), he was quite interested in manga during childhood days. However at grade 4 in school he showed his work to his father who promptly laughed at it, after which Sorachi temporarily abandoned his aims of being a manga artist. After graduation, he could not find a job, thus he turned to drawing manga (which he had already learned in university). He was able to gain some recognition through his first work Dandylion and subsequently progressed in his career (the comic is shown in the first volume of Gintama, with a foreword by Hideaki stating that it was his first work). 

In 2003, Sorachi's editor attempted to coax him to create a new series due to a new television program on the Shinsengumi airing on Japanese TV the next year. Yet Sorachi's original idea was to ride on the coattails of the Harry Potter franchise with a series about a school for demon dispellers. After several arguments and an attempt to write the Shinsengumi series, Sorachi gave up, took what he had of the script and twisted it to become the pseudo-historical science fiction series Gintama. (stated in Gintama Volume 1)    

Hideaki Sorachi holds a degree in commercial advertising (again, stated in volume 11). 

(Source: Wikipedia)

The samurai didn't stand a chance. First, the aliens invaded Japan. Next, they took all the jobs. And then they confiscated everyone's swords. So what does a hotheaded former samurai like Sakata "Gin" Gintoki do to make ends meet? Take any odd job that comes his way, even if it means losing his dignity.
 
(Source: Viz Media)
 
Included Bonus Chapters: 
Volume 1: Dandelion (One-shot). 
Volume 2: Shirokuro (One-shot). 
Volume 24: 13 (One-shot). 
Volume 38: Bankara-san Ga Tooru (One-shot). 
Volume 41: Special Lesson.

Gintama: THE FINAL is the 3rd and final film adaptation of the remainder of the Silver Soul arc and is the series finale.

Morihito, a boy with the strength of an ogre, is about to start living together with his childhood friend Nico, who is training to be a witch. Nico's magic leads to all sorts of unpredictable trouble, and with two teens under one roof... Let the fantastical antics begin! Magical comedy series by Kenta Shinohara creator of SKET DANCE and Astra Lost in Space.
 
(Source: MANGA Plus)
 
Notes: 
- Ranked 2nd place for the Next Manga Award in the Print Category in 2022.

The second season of the Silver Soul arc.