>>3907158>>3907140How to sauce for newfags:
Click the small, blue, right-facing arrow to the right of the post number containing the image you want to search for.
Hover over the option "Image Search" to open a slide-out and click on the option "iqdb".
A new tab will open with various search results, select the one marked "Sankuku Complex".
You now should be looking at the exact same image on a different site: Sankuku Complex!
The image will be accompanied by a series of color-coded tags on the left side of the page, the one you want is fuchsia: the full name of the source material.
Additional tags are green for character, red for artist, blue for general image tags such as "animated" or "uncensored", and finally the orange tags describing the content of the image.
In this case, the source material seems to be titled "Front Innocent", a term that can be easily entered into the search function of your favorite smut distribution site, I prefer nyaatorrents for anime and hentai (click the "fap"/"fun" button at the top to switch between the two sides of the site)