Some dedicated Harry Potter fanfic forums might be a great source. For example, The Leaky Cauldron forum has sections for fanfiction. Members often discuss and share their works or recommend other good fanfics. By posting a request for Tom Riddle and OC kissing fanfics in the relevant section, you may get some useful suggestions from other fans.
You can try fanfiction websites like FanFiction.net or Archive of Our Own (AO3). Just search for 'Ron and Hermione kissing' in their search bars, and you'll likely find a variety of fanfics. Some may be more to your taste than others, depending on the writing style and plot focus.
You can start by looking on Archive of Our Own (AO3). It has a large collection of fanfics from various fandoms. Just use the search bar and type in 'Jihoon' and 'OC' and 'kiss' to see if there are any relevant stories.
Some Harry Potter - themed forums might also have good Tom Riddle fanfiction recommendations. You can join these forums and ask the members for their favorite Tom Riddle fanfictions.
Often, there's a plotline where the OC has some special power or knowledge that Tom Riddle desires. As he tries to get closer to her to obtain it, feelings develop between them, and they end up kissing. There are also fanfics where the OC is sent to change Tom Riddle's fate, and in the process of trying to do so, they fall in love and share a kiss. It's all about the different ways the authors create a connection between the two characters that leads to that romantic moment.
One great Tom Riddle OC fanfic is 'The Dark Lord's New Companion'. It creates an interesting original character who gets intertwined with Tom Riddle's journey. The OC has unique powers and a complex backstory that makes the interactions with Riddle really engaging.
One popular 'tom riddle and oc fanfic' is 'The Dark Heir'. It has an interesting plot where the original character gets involved in Tom Riddle's dark schemes and tries to change his path. Another one is 'A New Destiny' which shows how an oc can impact the Hogwarts environment with Tom Riddle present.
I really like 'Hermione's Encounter with Tom Riddle'. In this fanfic, Hermione is on a mission to understand the roots of dark magic and ends up interacting closely with Tom Riddle. It has a great plot that keeps you on the edge of your seat, and the way the author portrays their relationship is both complex and fascinating.
You can start by searching on fanfiction platforms like Archive of Our Own or FanFiction.net. Use specific keywords such as 'Tom Riddle OC' and sort the results by popularity or rating. Check out the reviews and comments left by other readers to get an idea of which ones are worth reading.
The setting plays a big part too. If it's set in Hogwarts, there are so many opportunities to create a magical and atmospheric moment for the kiss. Maybe it happens in a hidden corner of the library or in the Forbidden Forest. The way the author describes the emotions during the kiss is also important. It should convey the complexity of Tom Riddle's character, like his inner conflict between his dark desires and his new - found feelings for the OC.
Character development. A good fanfic in this regard would show how the OC grows and changes in relation to Tom Riddle. For example, the OC might start off naive but gradually become more aware of Tom's true nature. Also, Tom Riddle's character should be consistent with the books, showing his cunning and his thirst for power.