It might involve Sebastian uncovering dark secrets hidden within the House of God while trying to fend off the demon's evil influence. There could be a lot of tension and suspense.
The plot could be quite thrilling and full of surprises. Maybe Sebastian has to battle supernatural forces or solve mysterious riddles within the sacred place.
Sebastian's demon form in the manga is incredibly powerful and imposing, with sharp features and dark, intimidating wings.
Well, perhaps it could be a story where they both get transported to a different realm. In this new place, they have to rely on each other to find their way back. Along the way, they learn about each other's pasts and develop an unexpected friendship. For example, Sebastian might share his loyalty to his master and Claude could talk about his own motives and goals which were not fully understood before.
Since I haven't read it, I can't say for sure. But it might be about Sebastian and Ciel in a situation where they are bound together in some way and are at rest. It could be a moment of peace between them in a world full of chaos and danger that they usually face in the Kuroshitsuji universe.
It could be that Dumbledore has a day filled with magical mishaps, difficult decisions, or run-ins with powerful foes. Maybe his spells don't work as expected or there's a big misunderstanding at Hogwarts that he has to sort out.
Well, it could be that Ciel gets a concussion while trying to solve a mystery in the underworld. Sebastian finds him unconscious and takes him home. As Ciel wakes up with a concussion, his vision is blurry and he has trouble recognizing Sebastian at first. This causes Sebastian to feel a strange sense of unease. He then devotes all his time to helping Ciel recover, and during this time, Ciel starts to rely on Sebastian more than ever, which changes the power balance between them a bit.
Maybe Harry steals wands to gain more power in the wizarding world. He could be on a secret mission to collect powerful wands that are hidden away. By stealing these wands, he might be trying to tip the balance of power in his favor against some dark forces.
There are lots of alternatives. For example, you can explore fanfics that center around Sebastian's growth as a character, his skills, or his interactions with other characters in a platonic sense. This way, you can still enjoy the character without getting into inappropriate content.
It could be about a character's journey throughout a year in the Naruto universe. Maybe it follows a ninja's training progress over 365 days, showing how they grow stronger each day and face different challenges.
The fanfic could explore their deepening bond over time, maybe through shared adventures or facing unexpected challenges together.
In a 'naruto becomes a god fanfic', the plot could involve Naruto ascending to godhood after a great sacrifice. He might then have to deal with new enemies that are threats not just to the ninja villages but to the entire universe. He could start to teach the new generation of ninjas his god - like skills and knowledge, changing the way ninjas are trained forever.