One scenario could be that it's a celebration at Hogwarts. After a big Quidditch victory, a female fan of Harry's runs up and gives him a lipstick kiss on the face. Another could be that it's a part of a school play, and the lead actress, who has a crush on Harry, gives him an unscripted lipstick kiss on the face during the performance, causing chaos and laughter among the students.
Perhaps in the fanfiction, there's a magical lipstick that has special properties. A character uses it to mark Harry's face as a sign that he's been chosen for a secret mission. The lipstick kiss on the face then becomes a sort of identifier that only those in the know can recognize. Or it could be that a love - stricken character, who is too shy to confess directly, leaves a lipstick kiss on Harry's face while he's sleeping, and when he wakes up, he's left wondering who it was.
It could be a bet gone wrong. Some students bet that a particular girl wouldn't have the guts to give Harry a lipstick kiss on the face. To prove them wrong, she does it, and this leads to all sorts of drama in the Gryffindor common room. There could also be a situation where a villainess uses a charm to put a lipstick kiss on Harry's face to frame him for having an improper relationship, causing trouble for him with the school authorities and his friends.
The fanfiction could explore different emotions associated with the lipstick kiss on the face. If it's a character like Hermione giving the kiss, it could represent a moment of breaking out of her usual reserved self. It could also be a symbol of a farewell kiss, perhaps when Harry is about to go on a dangerous mission. The lipstick kiss on the face might be a small but significant event that sets off a chain of other events in the story, like causing Harry to be distracted during a Quidditch match or leading to a discovery about a hidden love potion plot.
In fanfiction, a lipstick kiss on the face can be a symbol of affection. It might show a character's boldness in expressing their feelings, like a flirty gesture. For example, in a romantic fanfic, it could be the first step in a developing relationship.
One possible scenario in this fanfiction could be that Naruto has just achieved a great victory in a battle. A female character, perhaps Hinata, out of her deep admiration and love for Naruto, gives him a quick, shy lipstick kiss on the cheek. This simple act could send Naruto into a blushing mess as he wasn't expecting such an affectionate display.
You can describe it as a vivid mark. For instance, 'The bright red lipstick kiss on his cheek stood out like a beacon.'
One possible scenario could be that it's a moment of extreme stress and they find comfort in each other. Maybe they've just survived a close encounter with death eaters and the emotions are running high.
One scenario could be that Harry uses his invisibility cloak to help the Cullens spy on their enemies without being detected. Another is that he could use the Time - Turner (if it exists in the fanfiction world) to go back in time and prevent something bad from happening to the Cullens.
Well, one possibility could be Itachi as a wizard in the Harry Potter world. Maybe he'd be in Slytherin due to his cunning nature. He could use his Sharingan abilities in a magical way, like seeing through invisibility cloaks or detecting hidden spells.
One possible scenario is that Harry Potter helps the giants when they are being hunted by dark wizards. He uses his invisibility cloak and other magical items to hide the giants and lead them to safety. Another scenario could be that he helps the giants who are sick. He might search for rare magical herbs to cure their diseases.
Maybe Harry would be able to use the Speed Force to time - travel within the wizarding world. He could go back in time to prevent certain tragedies or gain more knowledge about magic from the past. This would add a whole new layer of complexity and adventure to the Harry Potter story.
One possible scenario could be that Harry feels betrayed by Dumbledore for some reason. Maybe he discovers some secrets that Dumbledore has been keeping from him, like the true nature of his family's past or the real intentions behind certain events at Hogwarts. So, in a fit of anger and disillusionment, he decides to ignore Dumbledore.