Another aspect could be the discovery of new secrets. Maybe Master Fu left behind some hidden messages or items that the heroes need to find. This could lead them on a quest that uncovers more about the Miraculous and their history. It might also introduce new characters who are somehow connected to Master Fu's past.
The death of Master Fu could also have an impact on the relationship between Ladybug and Chat Noir. They might become closer as they rely more on each other in the absence of their mentor. Or, they could start to have disagreements about how to handle things without Master Fu's wisdom, which could create some tension in their partnership.
Perhaps in the fanfiction, Adrian's death could be a result of a self - sacrifice. He might give up his life to save Ladybug or Paris from a great danger. This would lead to a whole new set of challenges for Ladybug as she has to deal with the loss of her partner and also continue to protect the city without him. His death could also be a catalyst for a new hero to emerge, or for Ladybug to gain new powers out of her extreme emotions.
One possible scenario could be that Hawkmoth finally achieves his ultimate goal which leads to the death of Ladybug. Maybe he gets hold of both the Ladybug and Cat Miraculouses and uses their combined power in a way that causes a catastrophic event resulting in her death.
One interesting plot development could be the exploration of how the characters deal with the aftermath of the Collector's actions. Maybe Ladybug and Chat Noir have to face new villains who were inspired by the Collector's chaos. Another aspect could be the growth of the side characters. For example, Alya might become more involved in the superhero side of things, helping Ladybug with strategies. Also, the relationship between Ladybug and Chat Noir could evolve in a different way. They might have a deeper understanding of each other's insecurities after the Collector incident.
In some 'Miraculous Ladybug After Mayura Fanfiction', there could be a shift in the power dynamics. Since Mayura was a powerful adversary, her absence might create a power vacuum that other characters try to fill. This could lead to new alliances and rivalries. Also, the relationship between Ladybug and Chat Noir could evolve. They might become closer as they face new challenges together without Mayura's interference.
In some fanfictions, one interesting plot development could be that Ladybug and Chat Noir accidentally reveal their identities during a battle. For example, their Miraculous might get damaged and they transform back in front of each other.
One possible storyline could be that Ladybug sacrifices herself to save Paris from an ultimate villain. Maybe the villain has created a weapon that can destroy the entire city, and Ladybug uses her powers to contain the blast at the cost of her own life. Her death would then lead to a city in mourning and Chat Noir having to step up in a whole new way, trying to keep Paris safe without his partner while also dealing with his grief.
The emotional toll would be significant. They may become more determined to avenge Master Fu's death or uphold his legacy. This could drive them to train harder and be more vigilant in their fight against Hawk Moth. However, it could also lead to overconfidence or taking unnecessary risks in the heat of the moment.
One possible plot could be that Ladybug and Chat Noir form a special 'Love Patrol' to protect the city during a Valentine's Day event. They notice that an akumatized villain is targeting couples and spreading hate. As they fight, they also start to realize their own feelings for each other more deeply. They use their powers in creative ways, like Ladybug's Lucky Charm creating heart - shaped objects that help them in the battle.
One possible storyline could be that Ladybug and Cat Noir have to protect a powerful Tibetan artifact from Hawk Moth. The artifact might have some sort of special power that Hawk Moth wants to use for evil. Another idea is that they encounter new kwamis in Tibet that are unique to the region and have to learn how to work with them. Maybe there are also local heroes in Tibet who team up with Ladybug and Cat Noir to fight against the villains.
One possible storyline could be that Ivan writes a song for Mylene. He pours his heart into the lyrics, expressing his deep love for her. Mylene, in turn, is touched and decides to perform a dance to go along with the song for a school talent show. Their performance not only showcases their love but also brings the whole school together in a celebration of art and love.