It depends on the specific content of the fanfic. If it adheres to general guidelines of no excessive violence, inappropriate language or adult themes, it could be suitable for a wide range of ages. But without actually reading it, it's hard to say for sure.
The main characters would obviously be Ben 10 and Mount Lady. Ben 10, with his Omnitrix that allows him to transform into various alien forms, brings his unique set of powers and a sense of adventure. Mount Lady, on the other hand, with her ability to grow to a large size, provides a different kind of power dynamic. She is also part of a hero community in her own world, which can add interesting elements to the fanfic as their two worlds collide.
The 'Our Lady of Mount Carmel Story' dates back to the origin of the Carmelite Order. Legend has it that Mary appeared on Mount Carmel. This encounter led to a deep spiritual bond between Mary and the Carmelites. She became their patroness, and the story has been passed down through generations, inspiring great devotion among the Carmelites and many Catholics. It's a story that embodies Mary's role as a spiritual guide and protector for those who look to her, especially within the context of the Carmelite spiritual heritage.
Well, the 'Our Lady of Mount Carmel Story' holds great importance in religious history. In the story, Mary is seen as a patroness for the Carmelites. This story has spread the idea of Mary's intercession and care. It has led to the growth of devotion to Mary within the Carmelite Order and also among the general Catholic population. Many religious artworks and prayers are based on this story, further emphasizing its significance.
Romance, of course, is a huge theme. How they fall in love, overcome obstacles together, and support each other in their hero careers. It could involve things like Izuku helping Mount Lady with her insecurities about her hero image, and her in turn helping him gain more confidence in his abilities.
One possible plot could be that Ben 10 and Mount Lady team up to fight a powerful villain that is causing chaos in their shared city. Ben uses his various alien forms to combat different threats the villain throws at them, while Mount Lady uses her size - changing abilities to deal with large - scale destruction and support Ben in battle.
One interesting storyline could be Mount Lady facing a new type of villain that can manipulate the earth in ways she's never encountered. This forces her to use her quirk in creative ways to overcome the threat.
Another character often paired with Mount Lady is All Might. Maybe in a 'what - if' scenario where they train together, or she has to save him at some point. Their interactions could explore different power dynamics within the My Hero Academia universe.
Another place to look is FanFiction.net. However, the quality can vary a lot. You'll need to sort through the results. Some stories might be really interesting and creative, while others might not be as good. But it's still a large platform with a lot of fan - created content.