While Winry is always present in the story, she is more prominent in certain arcs than others:
* The Ishvalan War Arc: Winry's backstory and her connection to the war are explored in this arc, showing her deep empathy and desire to heal.
* The Central Arc: Winry is central to the story as she helps Edward and Alphonse with their alchemy and provides emotional support.
* The Promised Day Arc: Winry plays a crucial role in the final battle, using her engineering skills to help the heroes.
You can find Winry's presence in *Fullmetal Alchemist: Brotherhood* throughout the entire series. She's not just a love interest but a vital part of the story and the emotional heart of the series.