One popular theme could be their adventures together. Maybe they go on a quest to save their world or a particular place within it. Another theme might be their friendship development. They could start as rivals and gradually become the best of friends. Also, a theme of self - discovery for each of them within the context of their relationship can be interesting in fanfiction.
You can try some well - known fanfiction websites like Archive of Our Own (AO3). It has a large collection of fanfictions from various fandoms, and there's a good chance you'll find some great garu x tobe ones there. Another option is FanFiction.net. It's been around for a long time and has a wide range of stories.
One common theme is the comical aspect of their relationship. Tobe is constantly trying to escape Pucca's affections, which leads to many humorous situations in fanfiction. Also, friendship can be a theme. Even though Pucca is in love with Tobe, there are fanfictions that explore their friendship first and how it could potentially turn into something more. For example, they might start off as reluctant friends who gradually realize their deeper feelings.
One common theme is the unrequited love. Tobe is often shown as being in love with Pucca while she is more focused on her own pursuits like cooking, but still has a soft spot for him. Another theme could be the comical misunderstandings between them.
One common theme is adventure. Since Garu is often associated with action - packed scenarios, the fanfictions might involve the reader joining Garu on his adventures.
There are also some Tumblr blogs dedicated to sharing fanfictions. You can try searching for tags like 'garu x reader fanfiction' on Tumblr. There might be some hidden gems among the posts shared by the fans in that community.
Tobe and Pucca are the key players. Tobe, with his ninja skills and somewhat clumsy attempts at wooing Pucca. And Pucca, with her unwavering love for Garu and her amazing cooking skills. In the fanfic, they are at the center of all the action and relationship - building.
The main characters would obviously be Pucca and Tobe. Pucca is a cute and energetic girl who is in love with Garu, but in this fanfic focusing on her and Tobe, she could develop a new kind of friendship or something more with Tobe. Tobe is the son of the Ninja boss and is often up to no good, but with Pucca, he might show a different side of himself.
There is a fanfiction titled 'Pucca's Dream of Tobe'. In this story, it explores Pucca's dreams about Tobe and how her subconscious mind is filled with thoughts of him. It's a really sweet and dreamy take on their relationship. Another interesting fanfiction is 'Tobe's Secret Admiration for Pucca'. It shows that despite his running away from Pucca all the time, Tobe actually has some secret admiration for her deep down.
Well, one place to start looking could be on fanfiction.net. There are often many creative works there. However, I haven't specifically read all the tobe x pucca ones, but you can search by the tags and check out the ones with high ratings and good reviews.