Is Tokyo Ghoul a true story?
Tokyo Ghoul Was Inspired By Kafka
Franz Kafka's The Metamorphosis is one of the stories which influenced the Tokyo Ghoul artist as he drafted his story. The classic tale was penned in 1915, and the short story follows a man named Gregor Samsa after he is mysteriously turned into a giant insect.
The second season of the Tokyo Ghoul anime series, titled Tokyo Ghoul √A, is a direct sequel to the first season of the anime, picking up right where the final episode left off. The series is produced by Pierrot, and directed by Shuhei Morita.
Tokyo Ghoul is set in an alternate reality where ghouls, creatures that look like normal people but can only survive by eating human flesh, live among the human population in secrecy, hiding their true nature in order to evade pursuit from the authorities.
Tokyo Ghoul:re ended with its second season in 2018, and it appears that, for now, that's the end of the franchise too. Sui Ishida brought the Tokyo Ghoul:re manga to a close with Chapter 179 in 2018, and with the end of the anime, there's no more of Ken's story to tell.
A “ghoul” was originally a creature in Arabic folklore that feasts on the flesh of the living or the dead, depending on the tale. The corpse-munching version became more popular in the West, but not in Japan, if Kentaro Hagiwara's hair-raising “Tokyo Ghoul” is any indication.
Tokyo Ghoul Creator Sui Ishida Was a Real-Life Ken Kaneki.
1 Ken Kaneki
With this, Kaneki gained great physical strength, endurance, and regeneration abilities which are considered to be unique. He possesses multiple Kagune, something that can only be achieved by only a few ghouls. Kaneki even has control over each and every one of them.
Eto Yoshimura Is the Notorious One-Eyed Owl
Eto Yoshimura is the most infamous "Owl" character in Tokyo Ghoul. One of the most powerful ghouls ever, Eto is the miraculous daughter of Yoshimura and Ukina, conceived against all odds, abandoned by her parents and then growing up hating the world.
As Kaneki had to repeatedly heal his toes over and over and over, all the while being tortured and borderline starved. His body was basically getting weaker and weaker because the cells were wearing thin, which is why his hair turns white, as happens with people when they get old.
The war between humans and ghouls is an overarching theme in Tokyo Ghoul, but it's the underlying theme that emerges toward the end - that this battle results from a society built on misguided beliefs that one species is superior, thus "right" - that is crucial to interpreting this story.
Why Tokyo Ghoul is famous?
One of the most epic scenes from the entire Tokyo Ghoul series is undoubtedly the torture of Kaneki. The reasons fan remember it is for multiple reasons – the fabulous voice acting, the horror filled torture tactics shown, Kaneki's fear and his eventual transformation.
Assuming you have seen the previous two seasons (anime) - Yes, you can watch Tokyo Ghoul:re without reading the manga. It's fine if you didn't understand the first episode. Things will gradually be explained in the anime, though not in much depth as in the manga, but you will start understanding the story.

In some accounts, the person rises as a ghoul after death. In others, he or she becomes a ghoul after dining on human flesh -- a cultural taboo often linked to monstrous transformations. In either case, the transformation is permanent and linked directly to the state of the soul or psyche.
Sui Ishida (Japanese: 石田 スイ, Hepburn: Ishida Sui, born December 28, 1986) is a Japanese manga artist. He is best known for his dark fantasy series Tokyo Ghoul, a story about a young man named Ken Kaneki who gets transformed into a ghoul after encountering one.
Origin. During the Dragon event, it is theorized that the Ghoul race came to be hundreds of years in the past after an unknown individual first underwent an explosive reproduction of RC cells and experienced a Dragon-like transformation, releasing spores that mutated a number of humans into ghouls through ROS.
Tokyo Ghoul:re is the sequel manga to Tokyo Ghoul. The Tokyo Ghoul manga ended in September of 2014 and was adapted into the first 2 seasons of the anime, though the second season, Root A, greatly diverged from the manga with significant differences but still attempted to have the same major events as the manga.