Well, in the 'Gintama Ending Story', perhaps it involves the main characters like Gintoki Sakata facing the final challenges. Maybe it's about the conclusion of the long - running battles against the various enemies they've had throughout the series. It could also be about the relationships among the characters reaching their final forms, whether it's friendships or rivalries.
The main character is surely Gintoki Sakata. He's the central figure in the Gintama series and would likely play a crucial role in the 'Ending Story' as well.
I recommend the book "Possibly a Fake Silver Soul". It tells the story of Jiang Cheng, a transmigrator, who met the owner of Xinghai District and his girlfriend, Jiang Hua, who were traveling in the universe in the dragon vein of a certain planet. Later, he came to Earth and met his teacher, Yoshida Shoyo, who had influenced his life. He also met a group of friends. This included the transmigrator Okita Soki. This is a Silver Soul Doujinshi novel, don't miss it. I hope you like this fairy's recommendation. Muah ~😗
Gintama is purely fictional. It's filled with imaginative characters and scenarios that are not rooted in real-life events. The creators crafted a unique and entertaining fictional world for the audience.