I'm not sure of specific 'Germany meets Italy's grandpa' fanfictions off the top of my head. You could try searching on popular fanfiction websites like Archive of Our Own (AO3). They have a large collection of fanfictions and you might be able to find something related by using relevant keywords in the search bar.
One possible plot could be that Germany is on a diplomatic visit to Italy and gets a chance to meet Italy's grandpa. Grandpa could share stories about Italy's history and culture, which gives Germany a deeper understanding of his friend Italy. Maybe there are some old family traditions that Italy has forgotten but grandpa reveals, and Germany helps Italy to reconnect with them.
In Germany and Fem Italy fanfiction, the theme of mutual growth is quite prevalent. They can learn from each other's strengths. For example, Germany can teach Fem Italy about organization and Fem Italy can teach Germany about enjoying life more. There's also the theme of international relations in a more personal context, like how they represent their countries in fictional diplomatic situations or cultural showcases, which adds depth to their relationship in the stories.
One common theme is friendship - turned - love. Given their historical and cultural interactions in the Hetalia universe, they often start as comrades or friends and then develop deeper romantic feelings. Another theme is the exploration of their different personalities. Germany's seriousness and Italy's more laid - back nature create interesting dynamics.
One popular Hetalia Germany and Fem Italy fanfiction is 'A Different Kind of Alliance'. It explores their relationship in a historical - turned - modern - day setting. The story delves into how their personalities interact, with Germany's stoicism and Fem Italy's more carefree nature creating an interesting dynamic. It has some really sweet moments where they gradually come to understand each other better.
One common theme is cultural exchange. Since Germany and Italy have distinct cultures, fanfictions often explore how Fem Italy might introduce Germany to Italian art, food, and lifestyle, and vice versa for Germany with his more disciplined and structured ways. Another theme is romance. Their different personalities, Germany's seriousness and Fem Italy's charm, make for an interesting romantic pairing in many stories.
One popular Germany and Fem Italy fanfiction might be 'A Tale of Two Nations'. It often focuses on their historical and cultural interactions, perhaps with a romantic undertone. Another could be 'Bonds Beyond Borders' which delves into how their different personalities, Germany's stoicism and Fem Italy's more vivacious nature, interact in various fictional scenarios.
It can show the different ways they use lemons in their respective cuisines. For example, Italy might use lemons in pasta dishes or in making limoncello. Germany could use lemons in a more German - style cake or in a new recipe they are trying out inspired by Italy.
Friendship is a common theme. They might show how Italy and Germany develop a strong bond through historical events or cultural exchanges. Another theme could be cooperation, like in the context of the European Union, where they work together on various projects.
One possible plot could be that Germany and Italy are on a journey together through the Italian countryside. They come across a lemon grove. Italy is excited to show Germany all about the lemons, how they are used in local cuisine. They end up making lemonade together and sharing stories under the lemon trees, strengthening their friendship.