Sure, Megumi discovers the truth about Toji being his dad in the manga. It's a crucial plot point that brings about various changes in Megumi's storyline and his relationships with others.
One popular 'Overwatch Reacts' fanfiction could be the ones where the Overwatch characters react to different timelines or alternate universes. For example, they might react to a world where the Omnic Crisis was never resolved. Another could be their reactions to new heroes joining the team. It's all about exploring the characters' personalities through these reaction scenarios.
Well, usually they focus a lot on the Doctor's reactions and emotions to various situations. The fanfictions might also explore how his character develops in unexpected ways.
They might be surprised by the complex and often dark themes in Warhammer fanfiction. RWBY characters are used to their own universe's rules and aesthetics, so the gritty and elaborate world of Warhammer could be a shock.
In the 'hogwarts reacts to muggle stuff fanfic', the students and teachers might react in different ways. The younger students could be overly excited. They might see a muggle mobile phone and think it's some kind of magical communication device that muggles have invented without magic. They would be eager to play with it. However, the older students and teachers might be more cautious. They might be a bit worried about how these muggle things could potentially affect the wizarding world.
One interesting 'Star Wars Reacts' fanfiction could be one where the characters from different Star Wars eras react to the new technology in the latest movies. For example, Obi - Wan Kenobi seeing the newfangled lightsaber designs. Another could be the Sith Lords reacting to the Jedi's attempts at diplomacy, which would create a lot of drama and conflict within the story. There are also fanfictions where the Star Wars characters react to crossovers, like what if they met characters from another popular sci - fi franchise.
It could be an enemy in disguise. Maybe a Grimm has managed to infiltrate their ranks in a clever way and then betrays the Rose character. Grimm are known for their devious ways and this would be a very RWBY - like scenario.
To start an 'Overwatch Reacts' fanfiction, you should study the existing Overwatch lore thoroughly. This will help you create a more believable reaction. Then, pick an interesting trigger for the reaction. It could be a new discovery in the Overwatch universe or a visit from an unexpected character. As you write, focus on the interactions between the characters and how their different personalities play off each other during the reaction.
Yes. Facebook provides the feature to let you know who reacted to your story. Just look for the relevant indicators or sections on the app to see the list of reactors.