This plot seemed to be similar to the plot in the Lord of the Rings series. According to the plot of the Lord of the Rings novel, this movie might be called The Lord of the Rings: The Return of the King. It described the battle between four different heroes in order to obtain a Lord of the Rings.
It's hard to say for certain. You'd need to look into the background and author's intentions. Some stories are inspired by real life but are not strictly true in every detail.
The Man in the Moon is not based on actual events. It's a fictional tale that has been passed down through generations for entertainment and imagination.
One Punch Man is about a guy named Saitama who can defeat any enemy with just one punch. But despite his amazing power, he struggles with the boredom of having no real challenge.
Definitely true. The character of the Elephant Man was inspired by the actual experiences of Joseph Merrick, who faced significant physical challenges and hardships in his life.