The land of Wano arc is started and one Piece introduces land of wano very well. In its first episode of land of wano arc, one piece shothe beauty of land of wano but in last episode, it shows us the reality of land of wano. One Piece episode 894 shows us the story of Otama who is waiting for Ace but she get trapped by kaido's pirates. Luffy saved her from Kaido's pirates . To return the favor, Otama invites Luffy to her house to eat some food.
This episode also shows us the problem of Otama who is capable to eat rice for few years but she cooked rice for Luffy which is she brought from market to celebrate her birthday. Obama's master tell Luffy about the truth of Otama and also tell him how Kaido's pirates destroy her village and polluted the river through the dump of factories. He also tell Luffy about Ace when he came to land of wano and saved villagers. I think Luffy will fulfill the place of his brother and he will solve the problem of Otama and provides her a good life.