One great 'usagi x mamoru fanfic' is 'A Starry Encounter'. It beautifully portrays their relationship with vivid descriptions of their interactions. The author does an amazing job of capturing their chemistry.
Some amazing usagi x mamoru fanfiction include 'Destiny's Bond'. This story really emphasizes the fated nature of their relationship. 'Love Beyond Time' is another good one where they are able to traverse different timelines to be together. And 'The Rose and the Moon' which uses symbolism of the rose (associated with Mamoru) and the moon (associated with Usagi) to tell a heartwarming story about their love.
You can find usagi x mamoru fanfiction on various fanfiction websites like FanFiction.net. There are a ton of stories there. Archive of Our Own (AO3) is also a great place. It has a large collection of fanfics with different ratings and themes. Another option is Wattpad, although the quality can vary more there.
Love is a very common theme. Since Usagi and Mamoru have a strong romantic connection in the original story, fanfictions often expand on their love, like how they overcome obstacles to be together.
In another scenario, Usagi and Mamoru could be at a ball. They dance gracefully together, lost in each other's eyes. After the ball, they take a stroll along the beach. The sound of the waves crashing against the shore sets a romantic mood. They hold hands tightly and exchange sweet nothings, reaffirming their love for each other.
Good Usagi x Mamoru fanfiction without lemon content often focuses on their emotional bond. It might explore how they support each other during difficult times in the Sailor Moon story. For example, when Usagi is feeling down about her duties as Sailor Moon, Mamoru is there to lift her spirits.
Rather than seeking 'lemon' (which implies sexual content) fanfiction about Usagi and Mamoru, you could explore their more romantic and story - driven fanfictions. There are many out there that focus on their relationship development, like how they deal with challenges in their relationship while also saving the world in the Sailor Moon universe. These can be found by simply searching for 'Usagi x Mamoru fanfiction' on relevant platforms.
You can start by looking on fanfiction.net. It has a large collection of 'usagi x mamoru fanfic'. There are different categories and ratings so you can easily find what you like.
One good Mamoru and Usagi fanfiction could be 'Moonlight Encounter'. It beautifully captures their relationship in a new light. The author describes their interactions with great detail, making it a very engaging read.