Gintama

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.