Update README.md

README.md

@@ -55,9 +55,13 @@ We've made a first attempt to filter out duplicates (e.g., same appearance descr
 
 ## Limitations
 
-### Limited Image Crawling Scope
+### Limited Crawling Scope
 
-We only grabbed the first image from the sidebar (infobox) of each Fandom wiki page; additional images were sadly not included.
+Our approach to gathering anime titles has limitations, so some titles may have been missed.
+
+For text, we only included characters whose Fandom wiki pages contain a non-empty "Appearance" section. As a result, many characters might not appear in this dataset.
+
+As for image, we only grabbed the first image from the sidebar (infobox) of each Fandom wiki page; additional images were sadly not included.
 
 But don't worry, with the provided Fandom URLs, you can always dive in and explore all the extra images at your leisure!