Well, in a well - written 'Honkai Impact fanfic', the author often pays attention to the relationships between characters. This could be the friendship among Valkyries or the enmity towards the Honkai. The fanfic also should have a good pacing. It doesn't rush through important events or drag on too long in uninteresting parts. And it might include some emotional depth, whether it's the pain of loss, the joy of victory, or the struggle of self - discovery, which makes the story more relatable to the readers.
One characteristic is the development of characters. In a great 'Honkai Impact fanfic', characters grow and change. They might face new challenges that force them to adapt. Also, the writing style matters. It should be descriptive enough to make the reader feel like they are in the Honkai universe. For instance, when describing battles, it can make the action seem vivid and exciting. Moreover, a good fanfic might introduce new concepts that still fit within the framework of the game's overall theme, like new types of Honkai beasts or unique weapons.
A well - written 'Honkai Impact fanfic' usually has a strong understanding of the original game's lore. For example, it accurately portrays the powers and personalities of the Valkyries. It also often has an engaging plot. Maybe it creates a new conflict or expands on an existing one in the game's world.