A great part of Homunculus Edward fanfiction is the creativity in the plot twists. Writers can introduce unexpected elements. Like, what if Edward's alchemy was affected by a homunculus in a way that made him able to do things he never thought possible? This can lead to really engaging stories that keep readers on their toes.
The ending of Slaying Crimson Pupil anime and manga might be different. Even though Cutting Crimson Eyes was a very popular manga, the animation production company might make some changes based on the plot and character settings of the manga to better adapt to the requirements of the television media. In addition, the plot of the anime may progress faster than the manga in order to present more plots in a shorter time.
However, regardless of whether the ending of the anime and manga is the same, we should appreciate the author's in-depth excavation and presentation of the series, as well as their fine creation of the characters and plot.
To create a compelling OC homunculus, start with its motivation. What does it want? Is it power, acceptance, or something else? Then, think about its relationships. Does it have an ally among the human alchemists or is it at odds with all of them? Also, consider its powers. Make them interesting and related to the Fullmetal Alchemist lore. For instance, it could have the ability to manipulate a specific type of metal in a way that's different from the main characters. And don't forget to give it flaws. A homunculus that is too perfect won't be as engaging.