Sure thing. Denki and Iwabe are nowhere to be found in the manga. It seems the creators chose not to incorporate them into the original manga storyline.
Denki Kaminari remains alive throughout the manga. The author didn't include his death as part of the narrative. His character has continued to play an active role in the story without facing such a fate.
Well, Bakugo might scoff at first. He'd probably think Batman is too brooding and not as straightforward as he likes his heroes. But then as he reads more of the fanfiction, he might grudgingly admit that Batman's detective skills are cool. Deku, on the other hand, would be super interested. He'd be analyzing every move Batman makes in the fanfiction, taking notes in his head about Batman's strategies and how they could be applied in his own hero work. Uraraka would be more focused on the relationships in the fanfiction. She'd be all 'aww' at the cute moments and feel for the characters when they're in trouble.
If parents come across disturbing content in Descendants fanfiction, they should immediately stop watching it. They can also report the content to the platform where they found it if possible.
Parents can react with understanding. They should create an open environment where the teen feels comfortable to talk. For example, instead of getting angry immediately, they can listen to the teen's feelings and experiences.
Luke might be in awe. He's always been seeking his family and a sense of belonging, so meeting his parents could make him feel complete. He'd probably listen intently to whatever they have to say.
Naruto may also try to find solutions. Despite the heartbreak, his optimistic nature might still shine through a bit. He could start to search for ways to mend the relationship with his parents, whether it's through magic in the Naruto world or by trying to prove his worth to them.
Sally would likely be very intrigued. She loves Percy so much and would be eager to explore more of his world through fanfiction. She might be a bit taken aback by some of the more extreme storylines. Poseidon, well, he might see fanfiction as a sort of strange mortal pastime at first. But if he found stories that really delved into his relationship with Percy in new ways, he could become quite interested.
Goku's reaction could be a mix of shock and joy. On one hand, he has been on Earth for so long without any real family connection to his Saiyan side. When he sees his parents, it would be overwhelming. He would likely be in awe of his father, Bardock, given his father's reputation as a strong Saiyan. And he would be eager to bond with his mother, who he has never known. He might also feel a sense of belonging that he has been missing all his life.