Although the exact original video behind this line is not widely documented, the clip circulates as a short Brazilian Portuguese reaction sound among manga and anime fans online. Its appeal comes from a familiar debate in those communities, where manga is often mistaken for an ordinary book, and the spoken correction turns that mix-up into a joke. Shared as a meme in edits and short videos, it is reused because it is instantly understandable even without context, letting creators signal pride in manga culture with a single spoken line.