What if Hatake Sakumo had been knocked unconscious by Gintoki falling from the sky when he tried to kill himself...
What if little Kakashi, who kept getting rejected by his teammates, had been taken in by Gintoki...
What if Hatake Sakumo became the teacher of Kakashi and Gintoki...
What if Tobi and Rin hadn't been teamed up with Kakashi...
The lively everyday antics of two white-haired guys, with no schemes, no bloodshed, and no sacrifices.
Where our Gintoki is, the main plot is just there to be rewritten.