Given the title and the mention of "Extra Quality," here are a few possibilities:
The actual "extra quality" copies are rarely public. They are traded in closed Discord servers dedicated to "Lost Media" and "Nostalgic Flash." To gain access, one typically must: gaki ni modotte yarinahoshi extra quality
The exclusivity adds to the legend. Many claim the "extra quality" version is a hoax—a digital unicorn. But those who have seen it describe a transformative experience: the ability to read the kanji on the protagonist's wall poster, to see the individual raindrops, to hear the subtle crack in the child voice actor's performance. Given the title and the mention of "Extra
Due to copyright grey areas and the transient nature of flash media, the "extra quality" version of Gaki ni modotte yarinahoshi does not exist on mainstream streaming platforms. You will not find it on Crunchyroll, Netflix, or even most torrent indexes. Instead, the search takes you deeper. The exclusivity adds to the legend
To understand the demand, we must first translate the phrase.
Full Translation: "I want to go back to being a kid and do it over again."
However, within the context of fan communities (particularly around adult comics or mature anime), this phrase is the title of a specific, well-known work. It evokes the trope of an adult protagonist regressing to their younger self to re-experience or "correct" past relationships—often with a romantic or erotic undertone. The phrase itself has become a shorthand for a genre: nostalgic reincarnation or time-leap redemption.