Perhaps a plot twist could be that Shego's powers start to change after the marriage. Maybe she loses some of her powers but gains new, unexpected abilities. This could cause her to feel insecure, and Ron would have to support her through this difficult transformation, all while they face new threats that are attracted to her new powers.
One possible plot twist could be that their respective families oppose the marriage at first. Maybe Kim's family is worried about Shego's past as a villain. But then, through a series of adventures together, the families come to realize that they truly love each other and are good for one another.
One possible plot twist could be that Ron initially panics about the pregnancy but then realizes he has strong feelings for Shego. Maybe he tries to keep it a secret from their respective friends and enemies, which would lead to a lot of sneaking around and near - misses of being discovered.
Well, a plot twist could be that the pregnancy is not as straightforward as it seems. Maybe there's some sort of magic or science - fiction element involved. For instance, the baby could have some superpowers that start to manifest even before it's born. This could attract the attention of various factions, both good and bad. Ron and Shego would then have to navigate through these new threats while also dealing with the normal pregnancy issues. Or perhaps, the pregnancy was caused by an accidental encounter with a strange artifact, and now they have to figure out how to ensure the baby's health while also finding a way to reverse the effects of the artifact if necessary.
Perhaps in this fanfiction, Ron and Bonnie are happily married but then Shego shows up pregnant. It could turn out that the baby has some sort of special power or connection to their world. Ron, with his experience in dealing with strange situations, might take it upon himself to protect Shego during her pregnancy. Bonnie could be initially jealous or suspicious but then grows to care for Shego as they realize they are all in this together. And the story could revolve around their journey to discover the origin of the baby and keep it safe.
One possible plot twist could be that Sakura discovers Kakashi has a secret past she never knew about. Maybe he was involved in some kind of dangerous mission long ago that has consequences in the present. This could put a strain on their relationship as she tries to come to terms with this new information.
One possible plot twist could be that just before the wedding, Ayame discovers a long - lost relative who has some dark secrets about Kouga's family. This relative tries to stop the wedding by revealing these secrets to Ayame. Another could be that on the wedding day, an old enemy of Kouga shows up and challenges him to a fight, putting the wedding on hold. Or perhaps there is a misunderstanding where Ayame thinks Kouga has betrayed her trust in some way, like he made a deal with an enemy for the sake of the tribe but didn't tell her.
Maybe Hikari suddenly gets an amazing job opportunity in a far - off place. This would force them to decide between following Hikari's career dreams and staying in their current comfortable life. It could lead to some really emotional and tense moments in the fanfiction.
One possible plot twist could be a long - lost relative showing up at the wedding and revealing a family secret that threatens to stop the marriage. For example, if there's a feud in the family that was hidden from Heiji and Kazuha.
One possible plot twist could be that their marriage is part of a larger plan to infiltrate an enemy organization. They pretend to be a happily married couple but are actually gathering intel. Another could be that Neo's past catches up with her during the wedding, and they have to deal with old enemies trying to disrupt the celebration.
One possible plot twist could be that they face opposition from the Hidden Leaf Village. Since same - sex relationships might not be as openly accepted in the traditional ninja world. Another twist could be that they have to go on a dangerous mission together right after getting married, which tests their new relationship. And perhaps there's a secret enemy who wants to break them apart because their union represents a new kind of hope in the village.