They could go to France. France has a rich magical history and a large wizarding community. It would be a place where they could blend in and also learn new magical techniques. The Beauxbatons Academy of Magic is there, which could offer a different educational environment if they had children.
One possible reason could be to escape the danger in England. Given the dark forces that were at play, especially Voldemort's rise, they might have felt it was safer to leave. Another reason could be for a fresh start. Maybe they wanted to explore new magical cultures and communities in other parts of the world.
Lily may focus on taking care of herself during the pregnancy. She'd ensure she has proper medical care, eats well, and gets enough rest. This would be a way for her to take control of the situation in a positive way. Also, she might consider reaching out to her family for help, if they are on good terms. They could provide practical assistance like helping her find a suitable place to live if needed.
One of the main themes is loss. With Lily leaving James, there's a sense of something being broken in Harry's family. It's about how Harry deals with that void in his life.
One popular 'harry lily leaves james fanfiction' is 'The Unspoken Bond'. It delves into the complex relationships between the characters. It shows how Harry copes with the absence of his parents in a very unique way, with a focus on his connection to Lily's memories.
One great Hermione, James Potter and Lily Potter fanfiction is 'The Unlikely Trio'. It explores a unique alternate universe where Hermione time - travels and gets involved in the lives of James and Lily. The story is full of interesting character interactions and a well - crafted plot that keeps you hooked from start to finish.
One great fanfiction could be 'Lily and James: A Love Beyond'. It delves deep into their relationship before Harry was born. It shows how they met at Hogwarts, their initial dislike which gradually turned into love. The story also includes their adventures as members of the Order of the Phoenix and how they fought against the Dark forces side by side.
Maybe Harry leaves England to explore the wizarding world in other countries. He could go to France to study different magic spells at Beauxbatons Academy. Or perhaps he travels to America to help the MACUSA (Magical Congress of the United States of America) deal with some dark magic threats.
He could meet new witches and wizards from different cultures. For example, he might run into a powerful African wizard who has unique magical abilities related to nature magic. Or he could meet a Japanese witch who specializes in charm - making that is based on ancient Shinto beliefs.
They could have adventures exploring different realms of heaven. Maybe there are places full of magical creatures they've never seen before. They might be on a quest to find a special kind of magic that can help Harry in some way, even from the afterlife.