Sure, the One Piece manga is still in the Wano Arc. There are many intense battles and plot twists happening. The arc has been quite elaborate and full of surprises.
One interesting 'One Piece Wano fanfiction' could be about a new character who is a master swordsman from Wano and teams up with Zoro. They go on adventures within Wano, facing off against new and powerful enemies that were not shown in the original story. This could add more depth to the already rich Wano arc.
First, you need to have a good understanding of the One Piece world, especially the Wano arc. Read the manga or watch the anime carefully. Then, think of an interesting concept. It could be a new adventure for the characters, a different outcome for an existing event, or a story centered around a minor character. After that, start creating your characters (if any new ones) and plan out the plot.
The answer is: "OST song" refers to the song in the OST. OST referred to the original music in movies, TV series, and other film and television works, and the song part was the OST song. According to the search results, some OSTs of movies and television works included some songs, such as the theme song of the TV series OST of " A Thought of Passing Mountains," many of Zhou Shen's OST songs, and Yu Kewei's Top Ten Classic OSTs. Therefore, an OST song referred to the song part of the original music in a film or television work.
The Wano Arc has indeed come to an end. It was a long and action-packed arc with many memorable moments and plot twists. The conclusion wrapped up various storylines and set the stage for new adventures.