Another way is to join Naruto or Rei related fan communities on social media platforms like Reddit or Facebook. Ask the members if they know of any good Naruto and Rei fanfiction. They might be able to point you to some hidden gems or even share their own works.
You can start by searching on popular fanfiction websites. Some well - known ones are Archive of Our Own (AO3) and FanFiction.net. Just type'rei ayanami lemon fanfiction' in their search bars.
Honestly, it's a bit tricky. Since 'lemon' - themed fanfics can sometimes cross the line into inappropriate territory. But you might check some of the larger, more permissive fanfic archives. Still, always be aware of the legality and ethical aspects of the content you're seeking.
Well, first, you could start by using specific search engines for fanfiction. Some of the more popular ones are dedicated to different fandoms. Also, check out relevant forums or communities where fans might share or recommend such fanfictions. Maybe there are some Tumblr blogs or Reddit threads that focus on this particular pairing and could lead you to the desired fanfiction about their kiss.
You can find rei x shinji fanfic on some popular fanfic websites such as Archive of Our Own (AO3). There are numerous stories there with different themes and interpretations of their relationship.
You can try searching on fanfiction websites like Archive of Our Own (AO3). It has a large collection of fanfictions, and you might be able to find some great takashi x rei ones there. Just use the search function and type in 'takashi x rei' to see the available stories.
Fanfiction.net is also another place to search. However, the tagging system might be a bit different compared to AO3. You may need to do a more in - depth search, but it still could be a good source for finding the 'nagisa x rei lemon fanfic' you're looking for. Keep in mind to respect the rules and regulations of the website while browsing.