One common theme could be love and affection. Since it involves a 'beso' (kiss), the fanfic may focus on the deepening relationship between Ash and Serena.
There are many fanfic platforms out there. Some popular ones apart from Archive of Our Own are FanFiction.net. Browse through their Pokémon section and look for stories with Ash and Serena in the tags. Then, you can skim through the descriptions or reviews to find the ones that might have a 'beso' scene as you desire.
Perhaps 'y' is a relative of Harry's that was thought to be dead. This relative could have a unique magical heritage that they pass on to Harry, making him even more powerful. For example, if 'y' was a distant cousin from a line of powerful seers, Harry might develop some precognitive abilities.
After the first beso, their relationship might become more confident. They start to be more open about their feelings for each other. They hold hands more often and share more affectionate glances.
It should also have an engaging plot. Maybe it's about them solving a new mystery in the wizarding world, or dealing with relationship problems. A good plot keeps the readers hooked from start to finish. And of course, the chemistry between Hermione and Ron needs to be palpable. Their banter, their support for each other, all these elements should be there to make it a great fanfic.
One popular 'hermione y ron fanfic' is 'The Unlikely Bond'. It beautifully explores their relationship post - Hogwarts. The author delves deep into their characters, showing how Hermione and Ron grow together and face new challenges as a couple. It has some really heart - warming moments that fans of the pairing will surely love.
One popular Star and Marco beso fanfic could be 'The Unspoken Bond'. It delves into their relationship after an unexpected beso moment, exploring how it changes their dynamic and adventures together. Another might be 'Beso's True Meaning', which focuses on the cultural and emotional significance of the beso in their story. There's also 'A Beso to Remember' that takes a more romantic and dreamy approach to their relationship post - beso.
Growth and self - discovery also play a big role. Both Ash and Serena are on their own personal growth journeys. In the fanfictions, their relationship can be a catalyst for their individual growth. Serena might become more confident in her skills as a Pokémon trainer because of Ash's support, and Ash might learn more about his emotions and how to handle them through his relationship with Serena.
Love and relationship development is a very common theme. Most fanfics focus on how Harry and Ginny's relationship grows, from initial attraction to deep love.
One heartwarming moment could be when Adrien and Marinette share a shy beso (kiss) for the first time. It might be in a beautiful garden, with the flowers as witnesses. The softness of the moment, the hesitation and the finally giving in to their feelings, makes it really special.