In some ichigo harem fanfic, there could be a plot where Ichigo accidentally enters a parallel dimension where his harem members have different personalities. He has to figure out how to get back to his own world while also dealing with these new versions of the people he cares about. This can lead to all sorts of comical and heart - warming situations as he tries to understand and adapt to the changes.
Well, a plot might involve Ichigo going on a journey with his harem, and during the journey, they discover new powers within themselves and also face relationship challenges. For example, some members might be jealous of the attention Ichigo gives to others in the harem. It makes for an interesting dynamic as they all learn to work together and grow closer as a group.
One idea could be to have Ichigo cross over into a different anime universe filled with potential love interests. For example, he could end up in a magical girl anime world where he has to deal with a group of girls who are both intrigued by his power and his different nature. Another could be a crossover into a post - apocalyptic world where a harem of strong - willed women see Ichigo as a symbol of hope and gradually develop feelings for him.
One possible plot could be Ichigo's struggle to escape Aizen's prison while also trying to figure out Aizen's true motives for capturing him. Maybe he discovers some dark secrets about Aizen's past during his captivity. Another plot could involve his friends trying to rescue him and the battles they face against Aizen's minions on their way to save Ichigo.
One idea could be Ichigo getting transported to different anime universes where he meets various female characters who are instantly attracted to his unique powers and sense of justice. For example, he could end up in the Naruto universe and meet Hinata, and she might be intrigued by his ability to see spirits. Another could be in the One Piece world, where Nami sees Ichigo as a potential ally against powerful enemies. The harem aspect would develop as these characters start to compete for Ichigo's attention in different ways.
One interesting plot could be a demon character entering Naruto's world and forming unique relationships with the female characters in a harem - like setting. For example, the demon might have special powers that attract the girls while also causing some conflict with Naruto's existing goals and friendships.
One interesting plot could be a hero in the Dungeons and Dragons world who gradually gathers a group of diverse female companions. They might start as strangers but bond over various quests, like slaying a powerful dragon that has been terrorizing the land. Each character in the harem could have a unique backstory and skills, such as a mage with the power to control the elements and a warrior who is an expert in sword fighting. The interactions between the hero and his harem members can range from romantic to friendly, and they all contribute to the overall adventure.
One interesting plot could be Ben having to protect his vampire harem from other supernatural threats. Maybe a group of werewolves wants to drive the vampires out of their territory and Ben, with his alien powers, has to step in and defend them.
One interesting plot could be a trainer who accidentally stumbles upon a hidden realm where legendary Pokemon reside and they all develop a special bond with him, forming a harem. Another could be a story where a young researcher is chosen by the legendary Pokemon to be part of their world and ends up in a harem - like situation due to their unique connection.
Sometimes, the plot revolves around Percy and the members of his harem going on adventures together. They could be exploring new and mysterious places, and during these adventures, their relationships develop and they face challenges as a group. In some 'percy x harem fanfic', there are also plots where Percy has to deal with jealousy and rivalry among the harem members, which creates a lot of drama and interesting relationship dynamics.
In some 'naruto hypno harem fanfic' plots, the hypno aspect could be related to an ancient jutsu that was lost but is now rediscovered. The male lead, Naruto in this case, might use this jutsu to form a harem not out of lust but for strategic reasons. He gathers strong female ninja around him through hypno - related means to form a powerful alliance against a common enemy that is much stronger than any of them individually.
Well, one interesting plot could be the swordsman character having to protect his harem members from various threats in the Naruto world, like rogue ninjas. Another could be the development of relationships within the harem, with different members having unique personalities and backstories that interact with the swordsman's own journey.