Sure. A lot of fanfiction writers prefer to focus on the more positive and family - friendly aspects of these two universes. They might write about how the characters from 'Harry Potter' and 'Black Widow' would interact in a magical - spy world, like Hermione and Black Widow sharing their knowledge and skills, without any 'lemon' elements. You can explore the different tags on the fanfiction sites to find such stories.
Definitely. There are many creative fanfic writers out there who are more interested in exploring the character development and unique storylines that can be created when combining the 'Harry Potter' and 'Black Widow' worlds. For example, Harry Potter could learn some combat skills from Black Widow, or Black Widow could be introduced to the magical world of Hogwarts. These types of stories are often more engaging and far from 'lemon' content.
Yes, there are likely many. You can start by looking on popular fanfiction websites like Fanfiction.net or Archive of Our Own. On these platforms, you can filter out the inappropriate content and search specifically for crossovers between 'Harry Potter' and 'Black Widow' that focus on adventure, friendship, or other non - 'lemon' themes.