If you are looking for ways to read manga (both ecchi and general genres), consider the following authoritative platforms:
The official source for many popular manga series, though their content is generally more "PG-13." If you are looking for ways to read
In the context of manga, "raw" refers to the original Japanese scans that have not been translated or edited into other languages (i.e., they are in their "raw" original form). If you are looking for ways to read
A major digital bookstore for manga and light novels, including a dedicated section for adult/ecchi titles. If you are looking for ways to read
The query "Ecchi,–,Page,3,–,漫画,raw" appears to be a specific search string for adult-themed manga (ecchi) content, likely referencing a page number or search result index on a manga hosting or "raw" scanning website.