On the 'A Journey to the Past' manga wiki, you can expect to see information on the main characters' backstories, reviews and critiques of the manga, and possibly fan art and cosplay inspiration.
I have no idea. You might have better luck asking in manga enthusiast communities or checking specialized manga databases. There could be detailed information there about the specific manga you're looking for.
The 'A Silent Voice' manga wiki offers a lot. It has details about the story development, character evolution, and maybe even fan theories. There's also likely information on the manga's reception and critical analysis.
Well, on the wiki for 'A Trail of Blood' manga, you can expect to find summaries of the plot, character profiles, and sometimes fan theories or discussions. It's a comprehensive source for all things related to the manga. However, the depth and accuracy of the content might vary based on the efforts of the wiki editors and contributors.