The author could focus on Ron as well. Since he's Harry's best friend and Ginny's brother, his reactions to their first meeting could be interesting. Maybe he's a bit overprotective of Ginny at first.
Hermione might also be a secondary focus. She could be observing their meeting, and her thoughts about whether they would make a good couple or not could be part of the story. She might also play a role in facilitating their conversation if it seems a bit awkward.
Neville could be another important character. He could be like a godfather to their children, teaching them about Herbology and sharing his own experiences of growing up in the wizarding world. Luna could also be involved. She might bring some of her unique and dreamy ideas to the family, like introducing the children to some strange but fascinating magical creatures she discovered. And of course, the Weasley family as a whole would be very much present, with Molly Weasley spoiling the children with her delicious magical cooking.
Perhaps it's a magical dream scenario. Harry has been thinking a lot about his parents and Ginny, and his magic subconsciously creates a dream world where his parents get to meet Ginny. In this dream, they might be in a cozy family setting at the Potter's old home. Ginny could show her Gryffindor courage and impress Harry's parents with her charm and knowledge of the wizarding world as it is in Harry's time.
There could be the tattoo artist. He or she might be an interesting character with a lot of stories about the tattoos they've done in the past. They could have a unique personality and play an important role in guiding Ginny through the process.
The Weasley family could play important supporting roles. For instance, Ron could be with Ginny when she meets Harry, and his reaction to Harry could add some humor to the situation. Mr. and Mrs. Weasley might also be present in the background, subtly observing the interaction between Harry and Ginny. Their warm and welcoming nature could make Harry feel more at ease, even if he doesn't fully realize the significance of this new acquaintance at the time.
It's also possible that they meet at a Weasley family gathering that Harry attends. Ginny, being the youngest Weasley, is a bit shy at first but then Harry says something funny or kind, and that starts their interaction.
They are likely to meet their future selves. This could be a very strange and enlightening encounter for both of them. They might also meet their descendants, like their children and grandchildren, which would be a heartwarming experience.
One possibility is that Harry and Ginny could use a time - turning device to go back in time and meet James and Lily. They might share stories about Harry's life, and James and Lily could give their blessings to Harry and Ginny's relationship. Ginny could also learn some of Lily's magical tips.
In some fanfictions, it could be a really awkward encounter. Harry might feel a bit of tension since he has a history with Cho and is now with Ginny. Ginny, on the other hand, could be a bit jealous or just curious about their past. Maybe Cho would be polite but still have some unspoken feelings for Harry.
One possible plot could be that through some time - traveling magic, James and Lily are brought to the future where they meet Harry and Ginny. They are amazed to see how much Harry has grown and the family he has created with Ginny. They share stories of the past and the challenges they faced, and James and Lily get to see the world they sacrificed so much for in a new light.
In fanfiction, when Harry and Ginny meet the Dursleys, there could be a lot of tension. The Dursleys are not fond of anything related to magic. Ginny, being a confident witch, might stand up to the Dursleys' rudeness towards Harry. Harry, on the other hand, would be in an awkward position as he has to deal with his Muggle family and his magical girlfriend at the same time. There could be some humorous exchanges as Ginny tries to understand the strange Muggle world of the Dursleys while also showing them that magic is not something to be feared.