Tony Stark was not one to be overly sentimental, but Aunt Peggy's funeral was different. As he entered the church, memories of the old tales of Peggy Carter flooded his mind. He remembered her as a symbol of strength and resilience. During the service, he couldn't help but think about how she was part of a generation that had laid the foundation for his own heroics. He knew that her legacy would continue to inspire him in his battles against evil.
Morgan Stark, Tony's daughter, could be a central character. Her existence might be what drives the other characters to find a way to bring Tony back. Rhodey, as Tony's long - time friend, would surely be involved in any attempt to save him. And there could also be appearances from characters like Nick Fury, who has a knack for getting involved in important events and might offer some resources or knowledge to help Tony survive.
One possible plotline could be that Tony Stark uses his genius to find an alternative way to defeat Thanos without sacrificing himself. Maybe he discovers a new element or technology during the final battle that turns the tide. Another plotline could involve time travel having unforeseen consequences that bring Tony back to life in a different timeline, and he has to find his way back to his original one.
Tony Stark could be involved in Aunt Peggy's funeral as a guest paying his respects. He might have heard stories about her from Steve Rogers and felt a sense of admiration for her. So he comes to the funeral to honor her and the legacy she left behind.
In this fanfiction, Tony at Peggy's funeral could be a moment of self - discovery for him. He might be surrounded by the reminders of a bygone era. As he stands there, he could be thinking about how Peggy's life and values are still relevant. He may even have an internal dialogue about how he can incorporate some of those values into his own actions moving forward. There could also be some tension if there are people at the funeral who don't quite trust Stark, and he has to deal with that while still showing his respect for Peggy.
Pepper Potts could be a big help. She knows Tony so well, and she could try to jog his memory by showing him things from their past together, like pictures or mementos. Rhodey could also be there for him. He could tell Tony stories about their military days and how they became friends, which might trigger some memories.