Law's back story is typically presented in episode 660 or so. But be aware that the specific episode can change based on factors like edits or regional variations.
I think it might be in season 7, but I'm not 100% sure. You might have to do some digging through the episodes to find out for sure.
Pica was one of the top officers in the Donquixote Pirates. He had the ability to merge with stone, which was a very unique power. His back story is somewhat related to his loyalty to Doflamingo. He was likely inspired by Doflamingo's charisma and strength, and thus became one of his most trusted subordinates. He followed Doflamingo's orders without question, believing in Doflamingo's grand plans for the New World.
The 'one piece law novel' could potentially be a story that uses the One Piece setting to explore legal concepts. For example, it might look at the legality of the different pirate crews' actions. Some crews might have their own codes that conflict with the world government's laws. It could also be about how the marines enforce the law and what happens when there are loopholes or corruptions in the legal system of the One Piece world.
The law is definitely not dead in One Piece. It exists in various forms and degrees, and its enforcement or violation drives many of the story arcs. The struggle against injustice and the search for true justice are ongoing themes related to the law within the manga.
Pica was a key figure in the Donquixote Pirates. His back story might involve a past of being overlooked or underestimated. With his devil fruit power, he found a new identity within the crew. He was fiercely loyal to Doflamingo as Doflamingo recognized his potential. This recognition was probably a big part of his motivation to stay with the crew.
In these games, the main feature is the accurate portrayal of the story arcs. For example, in 'One Piece: Pirate Warriors', the battles are designed around the key fights in the story. The characters' abilities and growth also follow the anime and manga. Another feature is the inclusion of iconic locations from the One Piece world, which helps to create an immersive experience that follows the story closely.
As of now, it's hard to give an exact episode number as it keeps updating. You might want to check the official manga sites or reliable manga forums for the latest.
The One Piece manga's episode count keeps evolving. You might want to refer to the publisher's official announcements or popular manga forums where fans discuss and update the current episode number.
The destruction of Ohara is crucial. Robin was just a child when it happened. After that, she had to learn to survive on her own. She faced betrayal from people who were afraid to be associated with her. Her decision to keep studying the Poneglyphs despite the danger was also a significant event. And finally, her encounter with the Straw Hat crew and deciding to join them changed her life for the better.
The key element is Arlong. He dominated Nami's village and made Nami's life miserable. Another key is Nami's love for her village that made her endure so much.